Severe Thunderstorm Warning 30, NWS Flagstaff, AZ

Issued

Aug 6, 2000, 3:55 PM MST (22:55 UTC)

Expired

Aug 6, 2000, 4:30 PM MST

In force

35 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Yavapai County, AZ

The Flagstaff radar (KFSX), 70 km from the middle of the area, began a volume at 22:55 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.

245 
WUUS55 KFGZ 062254
SVRFLG
AZC025-062330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
355 PM MST SUN AUG 6 2000

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL YAVAPAI COUNTY IN ARIZONA
  THIS INCLUDES THE CITIES OF...COTTONWOOD...COTTONWOOD-VERDE        
  VILLAGE...CORNVILLE.

* UNTIL 430 PM MST

* AT 351 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER COTTONWOOD-VERDE VILLAGE.  THE STORM WAS
  NEARLY STATIONARY.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES NORTHEAST OF CHERRY AT 430 PM MST

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

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

LAT...LON 3470 11182 3482 11198 3467 11218 3452 11198

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 6, 2:30 PM MST, 1 hour 25 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST SUN AUG 5 2000

SYNOPSIS...HIGH PRESSURE ALOFT WILL MIGRATE EASTWARD INTO NEW MEXICO
ON MONDAY. UNDER THIS PATTERN THE INFLUX OF MOISTURE FROM THE EAST...
INTO MAINLY CENTRAL AND SOUTHERN ARIZONA...WILL CONTINUE. THE CYCLE
OF AFTERNOON AND EVENING THUNDERSTORM ACTIVITY IS EXPECTED EACH DAY
WITH THE MOST SIGNIFICANT ACTIVITY OVER THE MOGOLLON RIM...WHITE
MOUNTAIN AND YAVAPAI COUNTY. LITTLE CHANGE IN THIS PATTERN IS SEEN
THROUGH THE END OF THE WEEK.

DISCUSSION...A WELL DEFINED DEFORMATION ZONE BISECTING THE STATE
FROM THE NE CORNER TO THE SW CORNER CAN BE SEEN ON WV IMAGERY.
RELATIVELY DRY AIR TO REMAIN ENTRENCHED OVER NORTHERN CWA...WITH
SOUTHERN CWA REMAINING MOIST. EXPECT CWA TO REMAIN UNDER LOW GRADE
MONSOONAL PATTERN AS MODELS HAVE H5 HI MIGRATING OVER AZ EASTWARD
AGAIN BACK OVER N.M. THIS PERIOD. BELIEVE THIS TO KEEP EASTERLY WAVE
OVER SE N.M./NORTHERN MEX NEARLY STATIONARY...AND THEN GRADUALLY
WASHING IT OUT. DO EXPECT SEEPAGE OF MOISTURE TO CONTINUE INTO
SOUTHERN CWA...WHILE NORTHERN CWA REMAINS UNDER FAIRLY DRY AIR MASS.
NOTED TROF DEVELOPING OVER NORTHERN CALIF COAST. BUT STRENGTH OF
HIGH PRESSURE OVER SW U.S. TO PREVENT IT OR ANY DRY SW FLOW FROM
DEVELOPING AND INFLUENCING THE REGION. WILL KEEP POPS LOW TO THE
NORTH. RH...DYNAMICS AND OROGRAPHICS ASSIST DEVELOPMENT OF MOST
SIGNIFICANT ACTIVITY OVER SOUTHERN HALF OF CWA. LITTLE CHANGE TO
UPPER THERMAL PATTERN ALOFT SO EXPECT LITTLE FLUCTUATION IN DAY TO
DAY TEMPS.

EXTENDED...H5 HIGH CENTERED OVER SOUTHERN ROCKIES TO REMAIN DOMINATE
FEATURE OVER DESERT SW THRU TH-E PERIOD. RH IN PLACE EXPECTED TO
REMAIN AND RH SEEPAGE TO CONTINUE UNDER LOW GRADE MONSOON PATTERN.
SEE NO CHANGE FROM CURRENT DIURNAL CYCLE OF CONVECTION. WILL CARRY
CHANCE OF TSTMS EACH DAY. DF

.FGZ...NONE

Severe Thunderstorm Warnings in Arizona, 2000Every severe thunderstorm warning in 2000

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.