Alert archive / California / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 4, NWS Hanford, CA

May 18, 2009Kern County, California

NWS Hanford, CA issued this severe thunderstorm warning at May 18, 2009, 2:30 PM PDT for Kern County, California. It was in force for 60 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 18, 2009, 2:30 PM PDT (21:30 UTC)
Expired
May 18, 2009, 3:30 PM PDT
In force
60 min
Issued by
NWS Hanford, CA
Area
Storm-based polygon

County Kern County, CA

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 Hanford, CA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 9:05 AM PDT, 5 hours 25 minutes earlier.

Area forecast discussion, May 18, 9:05 AM PDT, 5 hours 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
905 AM PDT MON MAY 18 2009

.DISCUSSION...ALL PARAMETERS INDICATE AN ISOLATED TO SCATTERED
THUNDERSTORM DAY OVER THE CENTRAL CALIFORNIA INTERIOR AS THE MOIST
SOUTHEAST FLOW IS PUSHING WELL INTO THE AREA. THE EDWARDS SOUNDING
FROM 12Z SHOWS LIFTED INDEX AT -5 AND CAPE TO 1600 J/KG AND WITH
RADAR ALREADY SHOWING SOME LIGHT SHOWERS MOVING INTO KERN COUNTY
FROM THE SOUTHEAST AND THUNDERSTORMS IN PROGRESS MOVING NORTHWEST
FROM SOUTHEAST CALIFORNIA, ISOLATED TO SCATTERED THUNDER IS A SLAM
DUNK. AS FOR TEMPERATURES, ANOTHER HOT DAY WILL OCCUR AND ALTHOUGH CURRENT
GRIDDED FORECAST MAX TEMPS MAY BE A LITTLE COOL AT SOME
LOCATIONS, TRIPLE DIGITS WILL BE WIDESPREAD AGAIN TODAY. ALL IN
ALL, THE PATTERN IS MUCH MORE AUGUST LIKE THAN MAY AND A VERY
EARLY TASTE OF THE SUMMER MONSOON WILL OCCUR. NO UPDATES THIS MORNING.

&&

.AVIATION...AN INFLOW OF MONSOON MOISTURE WILL PROVIDE MID TO HIGH
LEVEL CIGS OVER MUCH OF THE REGION. DAY TIME HEATING MAY TRIGGER
THUNDERSTORMS OVER THE MOUNTAINS DURING THE AFTERNOON. THE STORMS
MAY DEVELOP AROUND MID-DAY AND LAST INTO THE EARLY EVENING. THE
STORM MOVEMENT TOWARDS THE NW MAY BRING A THUNDER THREAT INTO THE
EAST SIDE AND SOUTH END OF THE SAN JOAQUIN VALLEY. ANY THUNDER
ACTIVITY WILL RESULT IN LOCAL MVFR CONDITIONS IN HEAVY SHOWERS.
OTHERWISE VFR CONDITIONS ARE EXPECTED ELSEWHERE THROUGH 18Z
TUESDAY.

&&

.AIR QUALITY ISSUES...
ON MONDAY MAY 18 2009... UNHEALTHY FOR SENSITIVE GROUPS IN
FRESNO... KERN... KINGS AND TULARE COUNTIES.
FURTHER INFORMATION IS AVAILABLE AT VALLEYAIR.ORG

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

PUBLIC...DUDLEY
AVN/FW...MOLINA

WEATHER.GOV/HANFORD
Hazardous weather outlook, May 18, 5:00 AM PDT, 9 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
500 AM PDT MON MAY 18 2009

CAZ090-092>094-191200-
EAST CENTRAL SAN JOAQUIN VALLEY-SOUTHEASTERN SAN JOAQUIN VALLEY-
MARIPOSA MADERA AND FRESNO COUNTY FOOTHILLS-
TULARE COUNTY FOOTHILLS-
500 AM PDT MON MAY 18 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EAST SIDE OF THE SAN
JOAQUIN VALLEY AND THE ADJACENT FOOTHILLS.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS
FOR THE EAST SIDE OF THE SAN JOAQUIN VALLEY AND THE ADJACENT
FOOTHILLS. SOME OF THESE THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY
RAIN...GUSTY WINDS...SMALL HAIL AND LIGHTNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

HAZARDOUS WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NECESSARY FOR THE EAST SIDE OF
THE SAN JOAQUIN VALLEY AND THE ADJACENT FOOTHILLS AFTER NOON PDT
TODAY.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR
UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE.

WEATHER.GOV/HANFORD

CAZ098-099-191200-
INDIAN WELLS VALLEY-SOUTHEASTERN KERN COUNTY DESERT-
500 AM PDT MON MAY 18 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE KERN COUNTY DESERTS.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS
FOR THE KERN COUNTY DESERTS. SOME OF THESE THUNDERSTORMS MAY
PRODUCE LOCALLY HEAVY RAIN...GUSTY WINDS...SMALL HAIL AND
LIGHTNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

HAZARDOUS WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NECESSARY FOR THE KERN COUNTY
DESERTS AFTER 11 AM PDT TODAY.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR
UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE.

SANGER

WEATHER.GOV/HANFORD

In the hours before

Special weather statement, May 18, 10:30 AM PDT, 4 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
1030 AM PDT MON MAY 18 2009

CAZ095-097>099-182030-
KERN COUNTY MOUNTAINS-TULARE COUNTY MOUNTAINS-INDIAN WELLS VALLEY-
SOUTHEASTERN KERN COUNTY DESERT-
1030 AM PDT MON MAY 18 2009

...THUNDERSTORMS EXPECTED TO FORM IN THE NEXT ONE TO TWO HOURS...

CONDITIONS ARE BECOMING CONDUCIVE FOR SHOWER AND THUNDERSTORM
FORMATION OVER THE FAR SOUTHERN SIERRA NEVADA...AND KERN COUNTY
MOUNTAINS AND DESERTS...INCLUDING THE COMMUNITIES OF
RIDGECREST...MOJAVE...TEHACHAPI...LAKE ISABELLA AND ROSAMOND. A
FEW STRONG STORMS WILL BE POSSIBLE WITH SMALL HAIL...HEAVY
DOWNPOURS...FREQUENT LIGHTNING AND GUSTY WINDS UP TO 40 MPH.
HOWEVER...THE RISK FOR SEVERE WEATHER APPEARS LOW AT THIS TIME.

CAZ089>094-096-182030-
WEST CENTRAL SAN JOAQUIN VALLEY-EAST CENTRAL SAN JOAQUIN VALLEY-
SOUTHWESTERN SAN JOAQUIN VALLEY-SOUTHEASTERN SAN JOAQUIN VALLEY-
MARIPOSA MADERA AND FRESNO COUNTY FOOTHILLS-
TULARE COUNTY FOOTHILLS-
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
1030 AM PDT MON MAY 18 2009

...THUNDERSTORMS POSSIBLE THIS AFTERNOON...

WITH MOISTURE STREAMING NORTH ACROSS CALIFORNIA THIS
MORNING...CONDITIONS MAY BECOME CONDUCIVE FOR THUNDERSTORM
FORMATION THIS AFTERNOON ACROSS THE SAN JOAQUIN VALLEY...AND THE
ADJACENT SIERRA FOOTHILLS AND YOSEMITE PARK AREA. HEAVY DOWNPOURS
WILL BE POSSIBLE WITH ANY THUNDERSTORMS THAT FORM. HOWEVER...THE
RISK FOR SEVERE WEATHER APPEARS LOW AT THIS TIME.

JMB

WEATHER.GOV/HANFORD
Special weather statement, May 18, 2:07 PM PDT, 23 minutes before
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The office that day

Everything else NWS Hanford, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 3:01 PM PDTSevere Thunderstorm WarningHNXMadera, Mariposa44 min
May 18, 3:49 PM PDTSevere Thunderstorm WarningHNXMariposa, Tuolumne56 min

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.