1 thunderstorm wind, as filed by the National Weather Service.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Hanford, CA wrote its last area forecast discussion before the first event at Sep 25, 2:30 AM PST, 40 minutes earlier.
INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 330 AM PDT TUE SEP 25 2001 THE COMBINATION OF AN EAST PACIFIC TROUGH MOVING ONSHORE AND TROPICAL MOISTURE FROM TROPICAL STORM KIKO HAS RESULTED IN A BAND OF MODERATE TO ISOLATED STRONG THUNDERSTORMS MOVING FROM WESTERN FRESNO COUNTY THROUGH WESTERN MADERA COUNTY INTO MARIPOSA COUNTY AND YOSEMITE NATIONAL PARK. RADAR AND SATELLITE LOOPS SHOW CONVECTIVE ACTIVITY LIFTING TO THE NORTHEAST...WITH THE TAIL END OF THE BAND MOVING INTO FRESNO COUNTY AT THIS TIME. STRONGEST ACTIVITY SHOULD MOVE NORTH OF THE HANFORD WARNING/FORECAST AREA BY SUNRISE...BUT A FEW SHOWERS MAY LINGER OVER THE NORTHERN HALF OF THE REGION THROUGH THE MORNING HOURS. SATELLITE LOOPS SHOW THE UPPER-LEVEL LOW NEAR 39N/125W...WITH A STRONG VORTICITY CENTER AT 37N/126W. THE LOW IS MOVING SLOWER THAN FORECAST BY THE 00Z MODELS...RESULTING IN GUSTY SOUTHERLY WINDS CONTINUING OVER THE HIGHER ELEVATIONS OF THE SOUTHERN SIERRA NEVADA AND TEHACHAPI MOUNTAINS THROUGH TODAY AND INTO THE EVENING. THE LOW IS MOVING THROUGH A BROAD EAST-PACIFIC TROUGH ASSOCIATED WITH A GULF OF ALASKA LOW NEAR 55N/143W. THIS TROUGH IS FORECAST TO REMAIN OFFSHORE THROUGH THURSDAY...ALLOWING A FEW DEGREES OF WARMING OVER THE NEXT COUPLE OF DAYS AS THE UPPER-LEVEL RIDGE OVER THE DESERT SOUTHWEST EXPANDS WESTWARD INTO SOUTHERN CALIFORNIA. WILL SEE SOME COOLING FRIDAY AS THE TROUGH MOVES INTO CALIFORNIA...BOTH SYNOPTIC COOLING AND AT THE LOWER ELEVATIONS...ANOTHER INFLUX OF MARINE AIR AS THE COASTAL MARINE LAYER DEEPENS. THE MRF...UK AND NOGAPS BUILD A SHORT-WAVE TROUGH OVER CALIFORNIA OVER THE WEEKEND AS ANOTHER TROUGH DROPS OUT OF THE GULF OF ALASKA. UNCERTAINTY FOR NEXT WEEK IS MOISTURE FROM HURRICANE JULIETTE... WHICH THE MRF FORECASTS TO MOVE INTO SOUTHERN CALIFORNIA NEXT TUESDAY. THIS IS BEYOND THE CURRENT EXTENDED FORECAST PERIOD...BUT THE DAY CREW MAY WANT TO INTRODUCE SOME CLOUDS OVER MOUNTAINS AND DESERTS FOR DAY 7 WITH THE AFTERNOON PACKAGE. POPS FAT 100 BFL 000 YNP 200. SANGER .HNX...NONE.
1 thunderstorm wind. Local standard time, as filed.
A strong thunderstorm, based on radar reports of 40 VIL and 63 DBz, prompted unverified severe thunderstorm warnings for higher elevations of the Southern Sierra Nevada in remote areas of NE Madera and NE Mariposa Counties during the early morning hours of the 25th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2001Every state in 2001This day in weather historyWarnings in California, September 2001
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5266085.