Severe Thunderstorm Warning 32, NWS Las Vegas, NV

Issued

Sep 11, 2004, 5:03 PM PDT (00:03 UTC)

Expired

Sep 11, 2004, 5:45 PM PDT

In force

42 min

Issued by

NWS Las Vegas, NV

Area

Counties, with a storm outline in the text

County San Bernardino County, CA

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS55 KVEF 120004
SVRVEF
CAC071-120045-
/X.NEW.KVEF.SV.W.0010.040912T0003Z-040912T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
503 PM PDT SAT SEP 11 2004

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA
  THIS INCLUDES THE CITY OF BARSTOW

* UNTIL 545 PM PDT

* AT 456 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  BARSTOW...AND MOVING NORTHEAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BARSTOW BY 510 PM PDT

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 3485 11723 3474 11706 3497 11679 3512 11703

$$

PIERCE

NWS Las Vegas, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 11, 2:12 PM PDT, 2 hours 51 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
212 PM PDT SAT SEP 11 2004

.SYNOPSIS...AN AREA OF LOW PRESSURE IS FORECAST TO MOVE INTO THE
INTERMOUNTAIN WEST SUNDAY BRINGING A DRIER SOUTHWEST FLOW TO THE
AREA. TEMPERATURES WILL REMAIN 2-3 DEGREES ABOVE NORMAL THROUGH
TUESDAY.
&&

.SHORT TERM...SCATTERED THUNDERSTORMS HAVE FORMED OVER THE FORECAST
AREA WHERE MODERATE INSTABIILITY COMBINED WITH DIFFERENTIAL HEATING
AND NUMEROUS REMNANT BOUNDARIES HAVE ALLOWED LFC TO BE REACHED OVER
SEVERAL LOCAL AREAS. CONVECTION CONTINUES TO BE SUPPORTED BY LARGE
SCALE LIFT ASSOCIATED WITH SUBTROPICAL JETSTREAK AS WELL. SLOW
MOVEMENT AND TRAINING OF CELLS CONTINUES TO SUGGEST POTENTIAL FOR
FLASH FLOODING IN SOME LOCATIONS AS STORMS BECOME MORE WIDESPREAD.
MODELS HAVE BEEN CONSISTENT IN PROJECTING PACIFIC TROUGH TO MOVE
ONSHORE TOMORROW AND FORCE THE DEEP MOISTURE TO RECEDE. THAT SHOULD
OFFICIALLY MARK THE END TO OUR MONSOON SEASON FOR THIS YEAR.
&&

.LONG TERM...AGREEMENT BETWEEN MODELS IS FAIR IN THE EXTENDED
WEDNESDAY TO SATURDAY TIME FRAME WITH DIFFERENCES CENTERED AROUND
DEPTH AND TIMING OF LATE WEEK TROUGHING OVER THE WEST. MOISTURE
SHOULD BE LONG GONE FROM THIS WEEKENDS LAST MONSOON HURRAH. WESTERLY
TO SLIGHT SOUTHWESTERLY FLOW...DEPENDING ON THE MODEL OF
CHOICE...WILL CONTINUE TO KEEP MOISTURE OUT AND CLOUD COVER LOW.
MINOR MODIFICATIONS TO TEMPERATURES WAS ABOUT THE ONLY THING
MODIFIED IN THE EXTENDED.
&&

.AVIATION...TAF ADEQUATELY COVERS ALL SIGNIFICANT WEATHER EXPECTED
AT KLAS.
&&

.VEF WATCHES/WARNINGS/ADVISORIES...
.NV...FLOOD WATCH FOR FLASH FLOODING THIS AFTERNOON AND EVENING FOR
NV ZONES 18/19-20/22
.AZ...NONE.
.CA...FLOOD WATCH FOR FLASH FLOODING THIS AFTERNOON AND EVENING
FOR CA ZONE 28.
&&

RUNK/JACQUES

Severe Thunderstorm Warnings in California, 2004Every severe thunderstorm warning in 2004

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