Severe Thunderstorm Warning 28, NWS Flagstaff, AZ

Issued

Aug 1, 2000, 8:25 PM MST (03:25 UTC)

Expired

Aug 1, 2000, 8:50 PM MST

In force

25 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Yavapai County, AZ

The Flagstaff radar (KFSX), 76 km from the middle of the area, began a volume at 03:27 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

965 
WUUS55 KFGZ 020323
SVRFLG
AZC025-020350-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
825 PM MST TUE AUG 1 2000

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS EXTENDED A

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

* UNTIL 850 PM MST

* AT 820 PM MST...THE PUBLIC REPORTED A SEVERE THUNDERSTORM OVER     
  MIDDLE VERDE...EXTENDING NORTH INTO THE COTTONWOOD AREA...MOVING   
  NORTHWEST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE CORNVILLE

THIS STORM WAS PRODUCING WINDS IN EXCESS OF 60 MPH OVER A BROAD AREA 
FROM COTTONWOOD AND JEROME...EAST INTO CORNVILLE IN EAST CENTRAL 
YAVAPAI COUNTY.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS WASHES AND UNDERPASSES.
AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE
WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...
THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.


LAT...LON 3479 11215 3454 11197 3464 11182 3483 11196

MCGRATH

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 2:30 PM MST, 5 hours 55 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST TUE AUG 1 2000

SYNOPSIS...HIGH PRESSURE OVER THE GREAT BASIN WILL CONTINUE TO BRING
AN EASTERLY FLOW TO NORTHERN ARIZONA FOR THE NEXT FEW DAYS. THE CHANCE
OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS OVER MOST OF THE
RIM COUNTRY WILL CONTINUE THROUGH THE END OF THE WEEK. OTHER AREAS
WILL STAY MOSTLY SUNNY AND DRY.

DISCUSSION...UNLIKE YESTERDAY...BIGGEST ACTION TODAY OVER THE
COCONINO PLATEAU AND CHUSKAS WITH STORMS DEVELOPING AND MOVING
QUICKLY WESTWARD WITH THE UPPER FLOW. EASTERN RIM AND NORTHERN GILA
COUNTY RELATIVELY QUIET SO FAR...WITH A CLUSTER OF THUNDERSTORMS
MOVING WESTWARD FROM NEW MEXICO INTO THE EASTERN LCR. EASTERLY FLOW LOOKS
TO CONTINUE FOR THE NEXT FEW DAYS. WITH LIMITED UPSTREAM MOISTURE
SEE A CONTINUATION OF THE CURRENT TREND OF CONVECTION FIRING OFF
DURING THE AFTERNOON OVER THE HIGHER TERRAIN AND THEN MOVING
WESTWARD OVER THE LOWER LYING AREAS. BECAUSE OF THIS...AREAS WELL
WEST OF HIGHER TERRAIN...SUCH AS THE LCR...LIKELY WONT SEE MUCH
ACTIVITY UNTIL THE LATER AFTERNOON TO EARLY EVENING.

IN THE EXTENDED...FRIDAY THROUGH SUNDAY...THE HIGH PRESSURE RIDGE
PERSISTS OVER THE SOUTHWEST. ALTHOUGH RELATIVELY DRY...THE RH ACROSS THE
RIM COUNTRY OF NRN AZ LOOKS TO STAY JUST HIGH ENOUGH TO WARRANT A
CHANCE OF STORMS DURING THE EXTENDED. NORTH AND EAST OF THE RIM WILL
BE MOSTLY SUNNY TO PARTLY CLOUDY.

KREITNER

.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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.