Alert archive / California / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 22, NWS Sacramento, CA

May 28, 2009Lassen County, Plumas County, Shasta County, California

NWS Sacramento, CA issued this severe thunderstorm warning at May 28, 2009, 5:37 PM PDT for Lassen County, Plumas County, Shasta County, California. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 28, 2009, 5:37 PM PDT (00:37 UTC)
Expired
May 28, 2009, 6:21 PM PDT
In force
44 min
Issued by
NWS Sacramento, CA
Area
Storm-based polygon

Counties Lassen County, CA, Plumas County, CA, Shasta County, CA

The radar

The Beale AFB radar (KBBX), 117 km from the middle of the area, began a volume at 00:37 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at May 28, 4:00 PM PDT, 1 hour 37 minutes earlier.

Area forecast discussion, May 28, 4:00 PM PDT, 1 hour 37 minutes before
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Hazardous weather outlook, May 28, 7:00 AM PDT, 10 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
700 AM PDT THU MAY 28 2009

CAZ013>019-063-064-066>069-291400-
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-
700 AM PDT THU MAY 28 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

UNSTABLE AIR WILL COMBINE WITH INCREASING MOISTURE TO CAUSE MORE
SHOWERS AND THUNDERSTORMS IN THE MOUNTAINS AND FOOTHILLS TODAY.
THUNDERSTORMS WILL DEVELOP IN THE NORTHERN SIERRA WEST OF THE CREST
EARLY THIS AFTERNOON...THEN SPREAD TO THE LASSEN PARK AREA...BURNEY
BASIN AND SHASTA COUNTY MOUNTAINS BY EARLY EVENING. THEY COULD DRIFT
WEST INTO THE FOOTHILLS LATER THIS EVENING.THUNDERSTORMS MAY CONTAIN
BRIEF HEAVY RAIN...STRONG WINDS AND SMALL HAIL.

* SPECIAL WEATHER STATEMENT..SEE WWUS86 KSTO - SPSSTO FOR DETAILS *

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

A SLIGHT CHANCE OF THUNDERSTORMS WILL LINGER THROUGH THE WEEKEND
OVER THE MOUNTAINS. ON MONDAY A TROUGH WILL TRIGGER THUNDERSTORM
CHANCES IN THE SACRAMENTO VALLEY.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, May 28, 2:09 PM PDT, 3 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
209 PM PDT THU MAY 28 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0205 PM     HAIL             13 NE MI-WUK VILLAGE    38.19N 120.01W
05/28/2009  E0.88 INCH       TUOLUMNE           CA   TRAINED SPOTTER

            A TRAINED SPOTTER IN STRAWBERRY, CA REPORTED PENNY TO
            NICKEL SIZED HAIL ALONG WITH VERY HEAVY RAINFALL.

&&

DANG
Local storm report, May 28, 2:57 PM PDT, 2 hours 40 minutes before
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Special weather statement, May 28, 3:13 PM PDT, 2 hours 24 minutes before
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Local storm report, May 28, 3:29 PM PDT, 2 hours 8 minutes before
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Nearby

Severe Thunderstorm Warnings in California, 2009Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.