Flash Flood Warning 29, NWS Flagstaff, AZ

Issued

Sep 2, 1997, 12:34 AM MDT (06:34 UTC)

Expired

Sep 2, 1997, 1:35 AM MDT

In force

61 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties

County Navajo County, AZ

The Flagstaff radar (KFSX), 122 km from the middle of the area, began a volume at 06:33 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.

000 
TTAA00 KFLG 020635
FFWFLG
AZC001-017-020835-

BULLTIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1134 PM MST MON SEP 1 1997

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF AZ HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1235 AM MST
AND A FLASH FLOOD WARNING EFFECTIVE UNTIL 135 AM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHEASTERN ARIZONA

   ...NORTHERN APACHE COUNTY
   ...NORTHERN NAVAJO COUNTY
 

AT 1130 PM MST...NATIONAL WEATHER SERVCIE DOPPLER RADAR WAS
INDICATING A SEVERE THUNDERSTORM 25 MILES SOUTH OF KAYENTA. THIS
STORM WAS MOVING TO THE NORTHEAST AT 15 MPH AND WILL APPROACH
NAVAJO ROUTE 59...JUST WEST OF ROUGH ROCK DURING THE NEXT HOUR.

LARGE HAIL...GUSTY WINDS AND HEAVY RAINS ARE POSSIBLE WITH THIS
STORM. DUE TO THE SLOW MOVEMENT OF THIS STORM...THE HEAVY RAINS
MAY CAUSE FLASH FLOODING OF NEARBY CREEKS AND WASHES.

 
WHEN THUNDERSTORMS ARE OCCURRING...FIND SHELTER INSIDE A STRONG
BUILDING AND DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS
PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UPHILL TO ESCAPE
FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER
BEGINS RISING.


PASSETTI

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Sep 1, 9:24 PM MDT, 3 hours 10 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
820 PM MST MON SEP 1 1997

88D INDICATING A FEW ISOLATED STORMS DEVELOPING OVER EASTERN YAVAPAI
AND WESTERN COCONINO COUNTY. OTHERWISE ALL THE ACTION OCCURRING TO
THE WEST OF CWA IN SOUTHERN CA-NV. SOME NOCTURNAL ACTIVITY ALSO NOTED
IN SOUTHERN AZ WITH SOME DEBRIS CREEPING INTO SOUTHERN PORTIONS OF
THE CWA.  00Z ETA INITIALIZED 5H VORT MAX OVER NW AZ THIS EVENING AND
THIS PROBABLY NOT TOO FAR OFF...BUT THINKING HERE IS THAT DISTURBANCE
IS A BIT FURTHER TO THE NW.  IN EITHER CASE...THIS LEAVING CWA UNDER
SOME NVA...AND THERE IS LITTLE ELSE TO ACT AS KICKER FOR THUNDERSTORM
DEVELOPMENT WITH THE ABSENCE OF DAYTIME HEATING.  THEREFORE...DECIDED
TO LET THE FFA GO EARLY. AS FOR THE REST OF THE FIRST PERIOD...SOME
ISOLATED STORMS STILL A POSSIBILITY UNTIL AROUND MIDNIGHT.  TEMPS
FORECAST LOOKING GOOD.

FOR THE LONGER TERM...IT APPEARS THAT NOT MUCH CHANGE WILL OCCUR I.N
THE OVERALL PATTERN...WITH THE EXCEPTION THAT THE 5H RIDGE CURRENTLY
OVER THE FOUR CORNERS REGION WILL STRENGTHEN CONSIDERABLY. THIS
SHOULD KEEP THE MONSOON TYPE FORECASTS GOING FOR THE NEXT COUPLE OF
DAYS.
FLG -535 INW -223
FLG...NONE

Flash Flood Warnings in Arizona, 1997Every flash flood warning in 1997

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.