Severe Thunderstorm Warning 11, NWS Las Vegas, NV

Issued

Jul 25, 2003, 1:22 PM MST (20:22 UTC)

Expired

Jul 25, 2003, 2:00 PM MST

In force

38 min

Issued by

NWS Las Vegas, NV

Area

Counties, with a storm outline in the text

County Mohave County, AZ

The Las Vegas radar (KESX), 126 km from the middle of the area, began a volume at 20:26 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.

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 252022
SVRVEF
AZC015-252100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
122 PM MST FRI JUL 25 2003

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA

* UNTIL 200 PM MST

* AT 122 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CENTRAL MOHAVE COUNTY...OR ABOUT 32 MILES
  NORTHEAST OF VALENTINE...MOVING NORTHWEST AT 10 MPH.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AND STAY AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN
PRODUCE LARGE HAIL...DAMAGING WINDS...DEADLY LIGHTNING...AND HEAVY
RAIN.

HAIL...INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH THIS
STORM. TAKE COVER IN A STURDY SHELTER UNTIL THE STORM PASSES.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO SHELTER...PREFERABLY INSIDE
A STRONG BUILDING BUT AWAY FROM WINDOWS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN LAS VEGAS.

LAT...LON 3585 11370 3569 11342 3588 11317 3606 11353

NWS Las Vegas, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 25, 10:00 AM MST, 3 hours 22 minutes earlier.

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1000 AM PDT FRI JUL 25 2003

.SYNOPSIS...MOIST SOUTHERLY FLOW AND AN UNSTABLE ATMOSPHERE TODAY
WILL ALLOW SCATTERED THUNDERSTORMS TO DEVELOP OVER THE REGION. SOME
OF THESE STORMS WILL CONTAIN VERY HEAVY RAIN. THE MOIST SOUTHERLY
FLOW WILL CONTINUE INTO THE MOJAVE DESERT AND SOUTHERN GREAT BASIN
THROUGH THE WEEKEND AS HIGH PRESSURE MIGRATES FROM COLORADO BACK
WEST INTO EAST CENTRAL NEVADA SUNDAY. TEMPERATURE WILL WARM SEVERAL
DEGREES BY SUNDAY.

.DISCUSSION...WATER VAPOR IMAGERY THIS MORNING SHOWS THE SOUTHERLY
FLOW FROM AROUND THE HIGH CENTER OVER EASTERN COLORADO CONVERGING
WITH THE FLOW AROUND A WEAK UPPER TROUGH JUST OFF THE CALIFORNIA
COAST. MOIST CONVERGENCE ZONE AND DEEP SOUTHERLY FLOW ARE STRETCHING
FROM CLARK COUNTY ALL THE WAY DOWN TO BAJA CALIFORNIA. ATMOSPHERE IS
ALREADY MOIST WITH 1.10 PW OFF THE KDRA SOUNDING THIS MORNING AND
THE PW SENSOR AT MCCARRAN AT AN ALMOST 1.5. DEWPOINTS ALONG THE
COLORADO RIVER ARE ALREADY IN THE UPPER 60S. RADAR THIS MORNING
SHOWS THUNDERSTORMS CONTINUING TO DEVELOP ALONG THIS ZONE IN A NORTH
TO SOUTH ORIENTATED LINE. THESE STORMS WILL MOVE NORTH...BUT ENTRAIN
ONE AFTER ANOTHER. THE MAIN THREAT WILL BE FLASH FLOODING. A FLASH
FLOOD WATCH WAS ISSUED EARLIER TODAY EFFECTIVE UNTIL 9PM.

.LAS...FLASH FLOOD WATCH UNTIL 9 PM ALL ZONES.

OROW

AZZ001>003-036-CAZ026>029-NVZ013>022-261200-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LAS VEGAS NV
930 AM PDT FRI JUL 25 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST CALIFORNIA/SOUTHERN
NEVADA/NORTHWEST ARIZONA

...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM THIS EVENING...

.DAY ONE...TODAY

THUNDERSTORMS WILL INCREASE IN COVERAGE ACROSS THE AREA THIS
AFTERNOON. THE COMBINATION OF HEAVY RAINFALL FROM INDIVIDUAL STORMS
AND THE POTENTIAL FOR MULTIPLE STORMS TO MOVE ACROSS THE SAME
LOCATION HAS REQUIRED THE ISSUANCE OF A FLASH FLOOD WATCH. THE
HIGHEST POTENTIAL FOR FLASH FLOODING EXISTS ACROSS SAN BERNARDINO
COUNTY...EASTERN INYO COUNTY...CLARK COUNTY...AND SOUTHERN NYE
COUNTY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. MOISTURE
WILL CONTINUE TO CIRCULATE ACROSS THE MOJAVE DESERT AND SOUTHERN
GREAT BASIN THROUGH THE PERIOD. ISOLATED TO SCATTERED
THUNDERSTORMS WILL CONTINUE FOR PARTS OF THE REGION.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON.

Severe Thunderstorm Warnings in Arizona, 2003Every severe thunderstorm warning in 2003

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; radar from the NEXRAD Level II archive.