A low pressure system off the coast coupled with daytime heating brought afternoon thunderstorms with hail up to 3/4 inch in diameter.
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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 episode as NWS STO wrote it up.
A low pressure system off the coast coupled with daytime heating brought afternoon thunderstorms with hail up to 3/4 inch in diameter.
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 Sacramento, CA wrote its last area forecast discussion before the first event at Jun 2, 3:25 PM PST, 2 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 425 PM PDT TUE JUN 2 2009 .DISCUSSION... SCATTERED THUNDERSTORMS WERE THE MAIN WEATHER STORY TODAY. INSTABILITY FROM THE LOW PRESSURE CELL OFFSHORE OF CALIFORNIA COUPLED WITH DAYTIME HEATING SET OFF MANY THUNDERSTORMS MOVING SOUTH TO NORTH ACROSS OUR CWA. INITIAL ISOLATED THUNDERSTORM ACTIVITY BEGAN AROUND 10 AM TODAY ALONG THE COASTAL RANGE. PRELIMINARY OBSERVATIONS INDICATE THAT...SINCE NOON...THERE HAVE BEEN ABOUT 1000 LIGHTNING STRIKES IN THE NORTHERN CALIFORNIA AND WESTERN NEVADA REGION. CURRENT RADAR IMAGERY INDICATES THAT THUNDERSTORM ACTIVITY IS DIMINISHING AND SHOULD CONTINUE TO DO SO AS THE EVENING PROGRESSES. MOST OF THE LIGHTNING STRIKES ARE NOW OCCURRING ON THE EASTERN SLOPES OF THE SIERRA AND THE WESTERN SLOPES OF THE COASTAL RANGE...OUTSIDE OF OUR CWA. HOWEVER ISOLATED THUNDERSTORMS ARE STILL POSSIBLE TONIGHT. LOW PRESSURE SYSTEM HAS BEEN NEARLY STATIONARY TODAY BUT IS FORECAST TO MAKE A SLIGHT JOG SOUTHEASTWARD BY TOMORROW. SOME THUNDERSTORMS TOMORROW COULD PRODUCE GUSTY WINDS AND SMALL HAIL AS SHORT WAVES SWING AROUND THE LOW AND MOVE ACROSS OUR CWA DURING DAYTIME HEATING HOURS. THE LOW WILL START MOVING NORTHEASTWARD AS IT EDGES ACROSS THE CENTRAL VALLEY WEDNESDAY AFTERNOON THROUGH THE END OF THE WEEK. PARTLY TO MOSTLY CLOUDY SKIES WILL CONTINUE UNDER THE INFLUENCE OF THE LOW WITH MAXIMUM TEMPERATURES BELOW NORMAL. DAYTIME HIGHS WILL RANGE IN THE MID 70S TO LOW 80S IN THE VALLEY. FOOTHILLS WILL BE IN THE MID 60S TO MID 70S. FRIDAY IS PROGGED TO BE THE COOLEST DAY THIS WEEK WITH TEMPS ABOUT 8 TO 15 DEGREES COOLER THAN NORMAL. JBB .EXTENDED DISCUSSION...SHOWERS AND THUNDERSTORMS WILL LESSEN OVER THE WEEKEND AS THE LOW PRESSURE CELL WEAKENS AND BECOMES AN ELONGATED OPEN TROUGH...ORIENTED SW-NE ACROSS THE WESTERN US. A WARMING TREND WILL ALSO BEGIN TO NUDGE TEMPERATURES UPWARD FROM SATURDAY INTO MIDWEEK...THOUGH THEY WILL STILL BE BELOW NORMAL. && .AVIATION... WEAK UPPER LEVEL LOW PRESSURE MOVES SLOWLY OVER NORTHERN CALIFORNIA THRU 00Z WEDNESDAY AFTERNOON. ATMOSPHERE MOIST AND UNSTABLE. WDLY SCT -SHRA/-TS OVER THE NRN AND CENTRAL SAC VALLEY THRU 05Z SCT050 BKN120 CB TOPS FL300...AFT 05Z BKN150 OVC250. NRN SIERNEV ISOLD -TS POSSIBLE THRU 05Z WILL REMAIN PRIMARILY NEAR OR EAST OF THE CREST. VFR SCT-BKN200 AFT 05Z. SHASTA/SISKIYOUS SCT080 BKN-OVC150 ISOLD -SHRA/-TS POSSIBLE. STRONG THUNDERSTORMS WITH HAIL...GUSTY WINDS AND LOCALLY HEAVY RAIN MAY AFFECT THE REGION TOMORROW AS THE UPPER LOW MOVES INLAND. SG && .STO WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SACRAMENTO CA 445 AM PDT TUE JUN 2 2009 CAZ013>019-063-064-066>069-031400- SHASTA LAKE AREA/NORTHERN SHASTA COUNTY- BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY- CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY- CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY- MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES- CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE- EAST FOOTHILLS/NORTH SACRAMENTO VALLEY- WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA- 445 AM PDT TUE JUN 2 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA. .DAY ONE...TODAY SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP TODAY AND CONTINUE TONIGHT OVER THE INTERIOR OF NORTHERN CALIFORNIA...MOST NUMEROUS OVER THE NORTHERN SIERRA...SOUTHERN CASCADES AND NORTHERN COASTAL RANGE. SOME OF THE STRONGER STORMS WILL CONTAIN HEAVY RAIN...STRONG GUSTY WINDS AND HAIL. .DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL OCCUR ACROSS THE REGION THROUGH THE WEEKEND...MAINLY OVER THE HIGHER TERRAIN OF THE INTERIOR OF NORTHERN CALIFORNIA. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE. THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT (LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 535 PM PDT TUE JUN 2 2009 CAZ013-066-068-030130- TEHAMA CA-SHASTA CA- 535 PM PDT TUE JUN 2 2009 THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... CENTRAL SHASTA COUNTY IN NORTHERN CALIFORNIA EXTREME NORTHEASTERN TEHAMA COUNTY IN NORTHERN CALIFORNIA UNTIL 630 PM PDT AT 531 PM PDT...STORM SPOTTERS REPORTED A STRONG THUNDERSTORM 6 MILES NEAR SHINGLETOWN...MOVING NORTH AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM... ALONG WITH FREQUENT DANGEROUS LIGHTNING...AND LOCALLY BRIEF DOWNPOURS. HAIL WAS REPORTED TO BE COVERING THE GROUND IN THE SHINGLETOWN AREA. TRAVEL ALONG HIGHWAY 44 MAY BE IMPACTED BY THE ACCUMULATION OF HAIL ON THE ROADWAY. LOCATIONS IMPACTED INCLUDE... WHITMORE... AND POSSIBLY ROUND MOUNTAIN... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. LAT...LON 4076 12212 4087 12175 4047 12162 4043 12184 TIME...MOT...LOC 0033Z 165DEG 15KT 4056 12178 JHM/FG
The Beale AFB radar (KBBX), 113 km away, was scanning. The volume nearest the first event began at 01:29 UTC.
1 hail. Local standard time, as filed.
Scattered thunderstorms over the area brought hail to Shasta County. A spotter reported hail 1/4 to 3/4 inch covering the ground in the Shingletown area near Highway 44.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2009Every state in 2009This day in weather historyWarnings in California, June 2009
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: 184483.