Method & sources
Every number on this site comes from NOAA data files fetched by our scripts and checked before each update. Nothing is a forecast of how much snow will fall.
ENSO Alert System status & synopsis (opens in a new tab)
El Niño Advisory (issued Sep 10, 2026)
PrimaryENSO strength probabilities (RONI bins) (opens in a new tab)
Issued September 2026
PrimaryONI (traditional index) (opens in a new tab)
JAS 2026: +2.16 °C
PrimaryRONI (NOAA's strength index) (opens in a new tab)
JAS 2026: +1.69 °C
PrimaryWeekly Niño-3.4 (opens in a new tab)
Week of Sep 30, 2026: +3.2 °C
PrimaryDec–Feb temperature & precipitation outlook (GIS shapefiles) (opens in a new tab)
DJF 2026-2027, issued Sep 17, 2026 (lead3_DJF_temp, lead3_DJF_prcp)
PrimaryOutlook prognostic discussion (opens in a new tab)
Issued Sep 17, 2026
PrimaryStation monthly snowfall + 1991–2020 normals (opens in a new tab)
1950-07 to 2026-06
Primary(API behaviour verified by live calls; docs page not reviewed — UNVERIFIED)City list & coordinates (opens in a new tab)
Census Vintage 2024 estimates + 2024 Gazetteer
PrimarySki area coordinates (opens in a new tab)
Wikipedia coordinates where available, else hand-entered (marked per station)
Secondary
All sources accessed Oct 5, 2026 unless noted.
Which winters count as “strong El Niño”
A winter qualifies if its peak 3-month index from Jun–Aug through Feb–Apr reached +1.5 °C or more by ONI or RONI, computed from NOAA's index files. Using the union avoids cherry-picking: by RONI alone 2023-24 (peak 1.42) would be “moderate”, while 1991-92 and 2009-10 qualify by the same rule as the famous years.
| Winter | Peak ONI | Peak RONI | Note |
|---|---|---|---|
| 1957-58 | +1.69 | +1.89 | |
| 1965-66 | +1.82 | +1.99 | |
| 1972-73 | +1.84 | +1.97 | |
| 1982-83 | +2.14 | +2.40 | “Big Three” (NOAA) |
| 1991-92 | +1.54 | +2.12 | |
| 1997-98 | +2.37 | +2.28 | “Big Three” (NOAA) |
| 2009-10 | +1.50 | +1.50 | |
| 2015-16 | +2.59 | +2.25 | “Big Three” (NOAA) |
| 2023-24 | +1.99 | +1.42 | Moderate by RONI |
ONI vs RONI
The Oceanic Niño Index (ONI) is the 3-month average sea-surface temperature anomaly in the Niño-3.4 region (5°S–5°N, 170°–120°W) against a 1991–2020 base. The Relative ONI (RONI) subtracts the tropical-mean anomaly, so long-term ocean warming doesn't make every event look stronger. NOAA now verifies El Niño strength with RONI, so we show RONI as the headline number and ONI as secondary. NOAA also notes that strength does not guarantee impacts.
Snowfall rules
- Season = July through June. Monthly sums from ACIS with
maxmissing: 3; a trace (“T”) counts as 0 and is shown as “Trace” if the whole season is trace. - Completeness: all of October–April must be present with ≤ 3 missing days each, or the winter is “No data”. Missing summer months count as 0.
- Normal: sum of the 12 NOAA 1991–2020 monthly normals (ACIS
normal: "1"). Fallback: the mean of complete seasons 1991-92 to 2020-21 if there are at least 15 (labeled “average of N seasons”); otherwise no normal and no percentages. - Percentages are hidden when the normal is under 1 inch (“Snow is rare here”) or fewer than 5 of 9 winters are complete.
- Location pages exist only where the normal is at least 5 in, at least 6 winters are complete, and the location falls inside NOAA's outlook map.
- Zero-snow seasons (for example at Seattle) are reported as ACIS returns them and have not been cross-checked against NWS local climate pages (UNVERIFIED).
How stations are chosen
- Cities: the 100 largest US cities (Census Vintage 2024) plus a short list of snow-belt and mountain cities, each mapped to a NOAA ThreadEx “threaded” record: a long record stitched across station moves, usually the city's official climate site. We match by station name first, otherwise the nearest ThreadEx station within 40 km. Cities sharing one station are merged (e.g. Minneapolis–St. Paul).
- Ski areas: the nearest NOAA cooperative (COOP) station within ±0.3° that recorded snow from 1983 or earlier through at least 2025 and sits within 1,500 ft of the resort's base elevation. These are nearby long-term stations, not summit snowfall. Resort base elevations used for this rule are hand-entered and UNVERIFIED.
- The outlook is looked up at the city or resort point (not the station) in NOAA's Dec–Feb shapefile; if a point fell just outside every polygon we would use the nearest one within 10 km (none needed this release).
Station list
| Location | Station | ACIS id | Elev. | Normal | Complete winters |
|---|---|---|---|---|---|
| Albany, NY | Albany Area (ThreadEx; current station ALBANY INTERNATIONAL AIRPORT) | ALBthr | 280 ft | 59.2 in | 9/9 |
| Albuquerque, NM | Albuquerque Area (ThreadEx; current station ALBUQUERQUE INTL AP) | ABQthr | 5,310 ft | 7.9 in | 9/9 |
| Anaheim–Riverside, CA | Riverside Area (ThreadEx; current station RIVERSIDE MUNICIPAL AP) | RALthr | 845 ft | 0.0 in (avg of 17) | 6/9 |
| Anchorage, AK | Anchorage Area (ThreadEx; current station ANCHORAGE TED STEVENS INTERNATIONAL AIRPORT) | ANCthr | 125 ft | 77.9 in | 9/9 |
| Atlanta, GA | Atlanta Area (ThreadEx; current station ATLANTA HARTSFIELD-JACKSON INTERNATIONAL AIRPORT) | ATLthr | 1,011 ft | 2.2 in | 8/9 |
| Austin, TX | Austin Area (ThreadEx; current station AUSTIN-CAMP MABRY) | ATTthr | 670 ft | 0.2 in | 9/9 |
| Bakersfield, CA | Bakersfield Area (ThreadEx; current station BAKERSFIELD AP) | BFLthr | 490 ft | 0.1 in | 9/9 |
| Baltimore, MD | Baltimore Area (ThreadEx; current station BALTIMORE-WASHINGTON INTERNATIONAL AIRPORT) | BWIthr | 138 ft | 19.3 in | 9/9 |
| Billings, MT | Billings Area (ThreadEx; current station BILLINGS INTERNATIONAL AIRPORT) | BILthr | 3,590 ft | 57.4 in | 9/9 |
| Bismarck, ND | Bismarck Area (ThreadEx; current station BISMARCK MUNICIPAL AP) | BISthr | 1,651 ft | 50.5 in | 9/9 |
| Boise, ID | Boise Area (ThreadEx; current station BOISE AIR TERMINAL) | BOIthr | 2,823 ft | 17.6 in | 9/9 |
| Boston, MA | Boston Area (ThreadEx; current station BOSTON LOGAN INTERNATIONAL AIRPORT) | BOSthr | 11 ft | 49.2 in | 9/9 |
| Buffalo, NY | Buffalo Area (ThreadEx; current station BUFFALO NIAGARA INTERNATIONAL AIRPOR) | BUFthr | 709 ft | 95.4 in | 9/9 |
| Burlington, VT | Burlington Area (ThreadEx; current station BURLINGTON INTERNATIONAL AIRPORT) | BTVthr | 332 ft | 87.5 in | 9/9 |
| Cape Coral, FL | Fort Myers Area (ThreadEx; current station FORT MYERS PAGE FIELD AP) | FMYthr | 13 ft | 0.0 in (avg of 16) | 8/9 |
| Casper, WY | Casper Area (ThreadEx; current station CASPER-NATRONA COUNTY AP) | CPRthr | 5,319 ft | 71.8 in | 8/9 |
| Charlotte, NC | Charlotte Area (ThreadEx; current station CHARLOTTE DOUGLAS AIRPORT) | CLTthr | 730 ft | 3.5 in | 9/9 |
| Cheyenne, WY | Cheyenne Area (ThreadEx; current station CHEYENNE WSFO AP) | CYSthr | 6,118 ft | 62.9 in | 9/9 |
| Chicago, IL | Chicago Area (ThreadEx; current station CHICAGO OHARE INTL AP) | ORDthr | 672 ft | 38.4 in | 8/9 |
| Cincinnati, OH | Cincinnati Area (ThreadEx; current station CINCINNATI/NORTHERN KENTUCKY INTERNATIONAL AIRPORT) | CVGthr | 861 ft | 23.3 in | 9/9 |
| Cleveland, OH | Cleveland Area (ThreadEx; current station CLEVELAND-HOPKINS INTL AP) | CLEthr | 777 ft | 63.8 in | 9/9 |
| Colorado Springs, CO | Colorado Springs Area (ThreadEx; current station COLORADO SPRINGS MUNICIPAL AP) | COSthr | 6,182 ft | 32.5 in | 9/9 |
| Columbus, OH | Columbus Area (ThreadEx; current station JOHN GLENN INTERNATIONAL AIRPORT) | CMHthr | 810 ft | 28.2 in | 9/9 |
| Concord, NH | Concord Area (ThreadEx; current station CONCORD MUNICIPAL AIRPORT) | CONthr | 338 ft | 67.7 in | 9/9 |
| Corpus Christi, TX | Corpus Christi Area (ThreadEx; current station CORPUS CHRISTI INTL AP) | CRPthr | 41 ft | 0.2 in | 8/9 |
| Dallas–Plano, TX | Dallas Area (ThreadEx; current station DALLAS FAA AP) | DALthr | 484 ft | 1.7 in | 8/9 |
| Denver–Aurora, CO | Denver Area (ThreadEx; current station DENVER INTL AP) | DENthr | 5,404 ft | 55.6 in (avg of 17) | 8/9 |
| Des Moines, IA | Des Moines Area (ThreadEx; current station DES MOINES INTL AP) | DSMthr | 939 ft | 36.5 in | 9/9 |
| Detroit, MI | Detroit Area (ThreadEx; current station DETROIT METRO AIRPORT) | DTWthr | 630 ft | 45.0 in | 9/9 |
| Duluth, MN | Duluth Area (ThreadEx; current station DULUTH INTL AP) | DLHthr | 1,422 ft | 90.2 in | 9/9 |
| El Paso, TX | El Paso Area (ThreadEx; current station EL PASO INTL AP) | ELPthr | 3,944 ft | 2.8 in | 9/9 |
| Erie, PA | Erie Area (ThreadEx; current station ERIE INTL AP) | ERIthr | 729 ft | 104.3 in | 8/9 |
| Fairbanks, AK | Fairbanks Area (ThreadEx; current station FAIRBANKS INTL AP) | FAIthr | 430 ft | 64.6 in | 9/9 |
| Fargo, ND | Fargo Area (ThreadEx; current station FARGO HECTOR INTL AP) | FARthr | 895 ft | 51.4 in | 9/9 |
| Flagstaff, AZ | Flagstaff Area (ThreadEx; current station FLAGSTAFF AP) | FLGthr | 6,999 ft | 90.1 in | 9/9 |
| Fort Wayne, IN | Fort Wayne Area (ThreadEx; current station FORT WAYNE INTL AP) | FWAthr | 797 ft | 33.6 in | 9/9 |
| Fort Worth–Arlington, TX | Dallas-Fort Worth Area (ThreadEx; current station DAL-FTW WSCMO AP) | DFWthr | 544 ft | 1.6 in | 9/9 |
| Fresno, CA | Fresno Area (ThreadEx; current station FRESNO YOSEMITE INT'L) | FATthr | 334 ft | 0.0 in | 9/9 |
| Grand Junction, CO | Grand Junction Area (ThreadEx; current station GRAND JUNCTION WALKER FIELD) | GJTthr | 4,824 ft | 17.7 in | 9/9 |
| Grand Rapids, MI | Grand Rapids Area (ThreadEx; current station GRAND RAPIDS GERALD R FORD INTL AP) | GRRthr | 788 ft | 77.6 in | 9/9 |
| Great Falls, MT | Great Falls Area (ThreadEx; current station GREAT FALLS AIRPORT) | GTFthr | 3,667 ft | 66.1 in | 9/9 |
| Green Bay, WI | Green Bay Area (ThreadEx; current station GREEN BAY A S INTL AP) | GRBthr | 684 ft | 55.6 in | 9/9 |
| Greensboro–Winston-Salem, NC | Greensboro Area (ThreadEx; current station GREENSBORO/PIEDMONT TRIAD INTERNATIONAL AIRPORT) | GSOthr | 902 ft | 7.1 in | 9/9 |
| Hartford, CT | Hartford Area (ThreadEx; current station HARTFORD-BRADLEY INTERNATIONAL AIRPORT) | BDLthr | 169 ft | 51.7 in | 8/9 |
| Helena, MT | Helena Area (ThreadEx; current station HELENA AIRPORT ASOS) | HLNthr | 3,865 ft | 37.2 in | 8/9 |
| Honolulu, HI | Honolulu Area (ThreadEx; current station HONOLULU INTL AP) | HNLthr | 6 ft | 0.0 in (avg of 21) | 6/9 |
| Houston, TX | Houston Area (ThreadEx; current station HOUSTON INTERCONTINENTAL AP) | IAHthr | 90 ft | 0.1 in | 9/9 |
| Indianapolis, IN | Indianapolis Area (ThreadEx; current station INDIANAPOLIS INTL AP) | INDthr | 792 ft | 25.5 in | 9/9 |
| Jacksonville, FL | Jacksonville Area (ThreadEx; current station JACKSONVILLE INTL AP) | JAXthr | 24 ft | 0.0 in | 9/9 |
| Juneau, AK | Juneau Area (ThreadEx; current station JUNEAU AIRPORT) | JNUthr | 19 ft | 87.6 in | 9/9 |
| Kansas City, MO | Kansas City Area (ThreadEx; current station KANSAS CITY INTL AP) | MCIthr | 1,008 ft | 18.2 in | 9/9 |
| Laredo, TX | Laredo Area (ThreadEx; current station LAREDO INTL AP) | LRDthr | 494 ft | 0.0 in (avg of 27) | 7/9 |
| Las Vegas–Henderson, NV | Las Vegas Area (ThreadEx; current station HARRY REID INTL AP) | LASthr | 2,175 ft | 0.2 in | 9/9 |
| Lexington, KY | Lexington Area (ThreadEx; current station LEXINGTON BLUEGRASS AP) | LEXthr | 962 ft | 14.5 in | 9/9 |
| Lincoln, NE | Lincoln Area (ThreadEx; current station LINCOLN AIRPORT) | LNKthr | 1,170 ft | 26.0 in | 9/9 |
| Long Beach–Irvine, CA | Long Beach Area (ThreadEx; current station LONG BEACH DAUGHERTY AP) | LGBthr | 34 ft | none | 4/9 |
| Los Angeles, CA | Los Angeles Downtown Area (ThreadEx; current station LOS ANGELES DOWNTOWN) | CQTthr | 378 ft | none | 5/9 |
| Louisville, KY | Louisville Area (ThreadEx; current station LOUISVILLE INTL AP) | SDFthr | 480 ft | 13.4 in | 9/9 |
| Lubbock, TX | Lubbock Area (ThreadEx; current station LUBBOCK INTL AP) | LBBthr | 3,259 ft | 7.0 in | 9/9 |
| Madison, WI | Madison Area (ThreadEx; current station MADISON DANE COUNTY REGIONAL AP) | MSNthr | 859 ft | 51.8 in | 9/9 |
| Marquette, MI | Marquette County Area (ThreadEx; current station MARQUETTE COUNTY AP FAA) | MQTthr | 1,415 ft | 196.8 in | 7/9 |
| Memphis, TN | Memphis Area (ThreadEx; current station MEMPHIS INTERNATIONAL AP) | MEMthr | 251 ft | 2.7 in | 9/9 |
| Miami–Hialeah, FL | Miami Area (ThreadEx; current station MIAMI INTERNATIONAL AP) | MIAthr | 5 ft | 0.0 in | 9/9 |
| Milwaukee, WI | Milwaukee Area (ThreadEx; current station MILWAUKEE MITCHELL AIRPORT) | MKEthr | 667 ft | 48.7 in | 9/9 |
| Minneapolis–St. Paul, MN | Minneapolis-St Paul Area (ThreadEx; current station MINNEAPOLIS-ST. PAUL INTERNATIONAL AIRPORT) | MSPthr | 835 ft | 51.2 in | 9/9 |
| Missoula, MT | Missoula Area (ThreadEx; current station MISSOULA INTERNATIONAL AP) | MSOthr | 3,195 ft | 43.0 in | 9/9 |
| Nashville, TN | Nashville Area (ThreadEx; current station NASHVILLE INTL AP) | BNAthr | 587 ft | 4.7 in | 9/9 |
| New Orleans, LA | New Orleans Area (ThreadEx; current station NEW ORLEANS AP) | MSYthr | -3 ft | 0.0 in | 8/9 |
| New York, NY | New York-Central Park Area (ThreadEx; current station NY CITY CENTRAL PARK) | NYCthr | 140 ft | 29.8 in | 9/9 |
| Newark–Jersey City, NJ | Newark Area (ThreadEx; current station NEWARK LIBERTY INTL AP) | EWRthr | 6 ft | 31.5 in | 9/9 |
| Oklahoma City, OK | Oklahoma City Area (ThreadEx; current station OKLAHOMA CITY WILL ROGERS WORLD AP) | OKCthr | 1,279 ft | 6.7 in | 9/9 |
| Omaha, NE | Omaha Area (ThreadEx; current station OMAHA EPPLEY AIRFIELD) | OMAthr | 980 ft | 27.1 in | 8/9 |
| Orlando, FL | Orlando Area (ThreadEx; current station ORLANDO INTL AP) | MCOthr | 89 ft | 0.0 in | 9/9 |
| Philadelphia, PA | Philadelphia Area (ThreadEx; current station PHILADELPHIA INTL AP) | PHLthr | 7 ft | 23.1 in | 9/9 |
| Phoenix–Mesa, AZ | Phoenix Area (ThreadEx; current station PHOENIX AIRPORT) | PHXthr | 1,113 ft | 0.0 in (avg of 23) | 8/9 |
| Pittsburgh, PA | Pittsburgh Area (ThreadEx; current station PITTSBURGH INTERNATIONAL AIRPORT) | PITthr | 1,119 ft | 44.1 in | 9/9 |
| Port St. Lucie, FL | Fort Pierce Area (ThreadEx; current station FORT PIERCE ST LUCIE COUNTY INTL AP) | FPRthr | 19 ft | 0.0 in (avg of 20) | 9/9 |
| Portland, OR | Portland Area (ThreadEx; current station PORTLAND INTL AIRPORT) | PDXthr | 22 ft | 4.2 in | 9/9 |
| Portland, ME | Portland Area (ThreadEx; current station PORTLAND JETPORT) | PWMthr | 44 ft | 68.7 in | 9/9 |
| Providence, RI | Providence Area (ThreadEx; current station RHODE ISLAND T.F. GREEN INTERNATIONAL AIRPORT) | PVDthr | 51 ft | 36.6 in | 9/9 |
| Pueblo, CO | Pueblo Area (ThreadEx; current station PUEBLO MEMORIAL AIRPORT) | PUBthr | 4,674 ft | 28.3 in | 9/9 |
| Raleigh–Durham, NC | Raleigh Area (ThreadEx; current station RALEIGH-DURHAM INTERNATIONAL AIRPORT) | RDUthr | 395 ft | 5.2 in | 9/9 |
| Rapid City, SD | Rapid City Area (ThreadEx; current station RAPID CITY REGIONAL AP) | RAPthr | 3,162 ft | 48.5 in | 7/9 |
| Reno, NV | Reno Area (ThreadEx; current station RENO AIRPORT) | RNOthr | 4,405 ft | 20.9 in | 8/9 |
| Richmond, VA | Richmond Area (ThreadEx; current station RICHMOND INTERNATIONAL AP) | RICthr | 166 ft | 8.8 in | 9/9 |
| Rochester, NY | Rochester Area (ThreadEx; current station FREDERICK DOUGLASS GREATER ROCHESTER INTERNATIONAL AIRPORT) | ROCthr | 540 ft | 102.0 in | 9/9 |
| Sacramento, CA | Sacramento Area (ThreadEx; current station SACRAMENTO AP ASOS) | SACthr | 19 ft | none | 5/9 |
| Salt Lake City, UT | Salt Lake City Area (ThreadEx; current station SALT LAKE CITY INTL ARPT) | SLCthr | 4,227 ft | 51.9 in | 9/9 |
| San Antonio, TX | San Antonio Area (ThreadEx; current station SAN ANTONIO INTL AP) | SATthr | 799 ft | 0.2 in | 8/9 |
| San Diego–Chula Vista, CA | San Diego Area (ThreadEx; current station SAN DIEGO INTERNATIONAL AP) | SANthr | 15 ft | 0.0 in (avg of 19) | 8/9 |
| San Francisco–Oakland, CA | San Francisco Airport Area (ThreadEx; current station SAN FRANCISCO INTERNATIONAL AP) | SFOthr | 10 ft | none | 5/9 |
| San Jose, CA | San Jose Area (ThreadEx; current station SAN JOSE) | SJCthr | 49 ft | none | 6/9 |
| Seattle, WA | Seattle Tacoma Area (ThreadEx; current station SEATTLE TACOMA AIRPORT) | SEAthr | 369 ft | 6.3 in | 8/9 |
| Sioux Falls, SD | Sioux Falls Area (ThreadEx; current station SIOUX FALLS FOSS FIELD) | FSDthr | 1,419 ft | 45.3 in | 9/9 |
| Spokane, WA | Spokane Area (ThreadEx; current station SPOKANE INTERNATIONAL AIRPORT) | GEGthr | 2,355 ft | 45.4 in | 8/9 |
| St. Louis, MO | St Louis Area (ThreadEx; current station ST LOUIS LAMBERT INTL AIRPORT) | STLthr | 531 ft | 16.6 in | 9/9 |
| Stockton, CA | Stockton Area (ThreadEx; current station STOCKTON AP) | SCKthr | 27 ft | none | 5/9 |
| Syracuse, NY | Syracuse Area (ThreadEx; current station SYRACUSE HANCOCK INTL AP) | SYRthr | 410 ft | 127.8 in | 9/9 |
| Tampa–St. Petersburg, FL | Tampa Area (ThreadEx; current station TAMPA INTL AP) | TPAthr | 6 ft | 0.0 in | 9/9 |
| Toledo, OH | Toledo Area (ThreadEx; current station TOLEDO EXPRESS AP) | TOLthr | 674 ft | 37.4 in | 9/9 |
| Tucson, AZ | Tucson Area (ThreadEx; current station TUCSON INTERNATIONAL AIRPORT) | TUSthr | 2,551 ft | 0.1 in | 9/9 |
| Tulsa, OK | Tulsa Area (ThreadEx; current station TULSA INTL AIRPORT) | TULthr | 639 ft | 8.7 in | 9/9 |
| Virginia Beach–Chesapeake, VA | Norfolk Area (ThreadEx; current station NORFOLK INTL AP) | ORFthr | 11 ft | 6.2 in | 9/9 |
| Washington, DC | Washington Area (ThreadEx; current station WASHINGTON REAGAN NATIONAL AIRPORT) | DCAthr | 13 ft | 13.7 in | 9/9 |
| Wichita, KS | Wichita Area (ThreadEx; current station WICHITA DWIGHT D. EISENHOWER NATIONAL AIRPORT) | ICTthr | 1,318 ft | 12.7 in | 9/9 |
| Alta / Snowbird, UT (ski) | ALTA | 420072 | 8,710 ft | 458.3 in | 6/9 |
| Alyeska, AK (ski) | ALYESKA | 500243 | 272 ft | 214.5 in | 5/9 |
| Aspen Snowmass, CO (ski) | ASPEN 1SW | 050372 | 8,175 ft | 170.8 in | 6/9 |
| Beech Mountain, NC (ski) | BANNER ELK | 310506 | 3,730 ft | 31.4 in | 5/9 |
| Big Bear Mountain, CA (ski) | BIG BEAR LAKE | 040741 | 6,753 ft | 58.6 in | 5/9 |
| Boyne Mountain, MI (ski) | BOYNE FALLS | 200925 | 728 ft | 111.7 in | 8/9 |
| Breckenridge / Copper Mountain, CO (ski) | BRECKENRIDGE | 050909 | 9,598 ft | 184.6 in | 9/9 |
| Bretton Woods, NH (ski) | PINKHAM NOTCH | 276818 | 2,025 ft | 135.8 in | 8/9 |
| Bridger Bowl, MT (ski) | BOZEMAN MONTANA STATE UNIVERSITY | 241044 | 4,913 ft | 91.3 in | 8/9 |
| Brighton, UT (ski) | SILVER LAKE BRIGHTON | 427846 | 8,740 ft | 379.0 in (avg of 18) | 7/9 |
| Brundage Mountain, ID (ski) | MCCALL | 105708 | 5,025 ft | 132.2 in | 7/9 |
| Crested Butte, CO (ski) | CRESTED BUTTE | 051959 | 8,867 ft | 203.0 in | 9/9 |
| Crystal Mountain, WA (ski) | RAINIER PARADISE RS | 456898 | 5,415 ft | none | 4/9 |
| Deer Valley, UT (ski) | KAMAS | 424467 | 6,481 ft | 96.9 in | 3/9 |
| Grand Targhee, WY (ski) | ALTA 1 NNW | 480140 | 6,440 ft | 113.4 in | 8/9 |
| Heavenly, CA (ski) | SOUTH LAKE TAHOE AP | 048762 | 6,257 ft | none | 1/9 |
| Jackson Hole, WY (ski) | JACKSON | 484910 | 6,210 ft | 78.2 in | 7/9 |
| Keystone, CO (ski) | DILLON 1 E | 052281 | 9,081 ft | 115.5 in | 8/9 |
| Killington, VT (ski) | RUTLAND | 436995 | 620 ft | 74.6 in | 9/9 |
| Lake Tahoe (Tahoe City), CA (ski) | TAHOE CITY | 048758 | 6,230 ft | 179.0 in | 8/9 |
| Loon Mountain, NH (ski) | WENTWORTH | 279091 | 653 ft | 76.5 in | 3/9 |
| Mt. Hood Meadows, OR (ski) | GOVERNMENT CAMP | 353402 | 3,980 ft | 232.5 in | 9/9 |
| Park City Mountain, UT (ski) | WANSHIP DAM | 429165 | 5,940 ft | 72.2 in | 6/9 |
| Purgatory, CO (ski) | SILVERTON | 057656 | 9,285 ft | 172.6 in | 6/9 |
| Seven Springs, PA (ski) | DONEGAL 2 NW | 362183 | 1,800 ft | none | 4/9 |
| Snowbasin, UT (ski) | PINEVIEW DAM | 426869 | 4,940 ft | 107.9 in | 5/9 |
| Snowshoe, WV (ski) | SNOWSHOE | 468308 | 4,802 ft | 144.7 in | 5/9 |
| Steamboat, CO (ski) | STEAMBOAT SPRINGS | 057936 | 6,866 ft | 184.5 in | 7/9 |
| Sugarbush, VT (ski) | SOUTH LINCOLN | 437612 | 1,341 ft | 112.5 in | 4/9 |
| Sugarloaf, ME (ski) | KINGFIELD | 174324 | 598 ft | 81.4 in | 5/9 |
| Summit at Snoqualmie, WA (ski) | EASTON | 452384 | 2,170 ft | none | 1/9 |
| Sun Valley, ID (ski) | KETCHUM RANGER STATION | 104845 | 5,890 ft | 102.0 in | 5/9 |
| Taos Ski Valley, NM (ski) | EAGLE NEST | 292700 | 8,280 ft | 71.5 in (avg of 24) | 5/9 |
| Telluride, CO (ski) | TELLURIDE 4WNW | 058204 | 8,646 ft | 130.8 in | 8/9 |
| Whiteface, NY (ski) | LAKE PLACID 2 S | 304555 | 1,888 ft | 104.1 in | 4/9 |
| Winter Park, CO (ski) | WINTER PARK | 059175 | 9,123 ft | 214.0 in | 9/9 |
Not included
- Boulder, CO: no ThreadEx station by name or within 40 km.
- Santa Fe, NM: no ThreadEx station by name or within 40 km.
- Brian Head, UT (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (13 candidates checked).
- Vail, CO (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (6 candidates checked).
- Wolf Creek, CO (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (7 candidates checked).
- Kirkwood, CA (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (16 candidates checked).
- Mammoth Mountain, CA (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (2 candidates checked).
- Schweitzer, ID (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (4 candidates checked).
- Big Sky, MT (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (8 candidates checked).
- Whitefish Mountain, MT (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (7 candidates checked).
- Ski Santa Fe, NM (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (23 candidates checked).
- Mt. Baker, WA (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (7 candidates checked).
- Stevens Pass, WA (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (11 candidates checked).
- Mt. Bachelor, OR (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (6 candidates checked).
- Stowe, VT (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (17 candidates checked).
- Jay Peak, VT (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (7 candidates checked).
- Mount Snow, VT (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (35 candidates checked).
- Sunday River, ME (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (13 candidates checked).
- Hunter Mountain, NY (ski): no COOP snow station within ±0.3° with record from ≤1983 to ≥2025 and elevation within 1500 ft of the base (39 candidates checked).
Known limits & unverified items
- NOAA's November and December outlook dates (about Nov 19 and Dec 17) are not yet confirmed on its schedule page.
- ACIS documentation and usage policy were not reviewed; the API was verified by live calls only.
- Ski resort base elevations and a few resort coordinates are hand-entered (UNVERIFIED); each station note says which.
- Several stations have gaps (for example Denver International Airport recorded no snowfall for about 1995–2006), shown as “No data”.
- Secondary reporting we read but don't use as data: OpenSnow — strong El Niño building, potential winter 2026-27 impacts; The Weather Channel — Dec–Feb winter outlook (Sep 11, 2026).
Update log
- : Launch. ENSO status from the Sep 10, 2026 CPC discussion; Dec–Feb outlook from the Sep 17, 2026 CPC issuance; station snowfall from ACIS through June 2026.
Next scheduled updates: ENSO discussion Oct 8, 2026; seasonal outlook Oct 15, 2026.