Flash Flood Warning 20, NWS Flagstaff, AZ

Issued

Aug 22, 1997, 1:06 PM MST (20:06 UTC)

Expired

Aug 22, 1997, 3:55 PM MST

In force

3 hr

Issued by

NWS Flagstaff, AZ

Area

Whole counties

County Coconino County, AZ

The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 20:06 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 222006
FFWFLG
AZC005-222255-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
106 PM MST FRI AUG 22 1997

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF AZ HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 355 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTH CENTRAL ARIZONA

   ...NORTHERN COCONINO COUNTY
 
AT 105 PM MST NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM
JACOBS LAKE TO THE KAIBAB LODGE JUST NORTH OF THE GRAND CANYON.
THESE THUNDERSTORMS WERE SLOWLY MOVING TO THE EAST ALONG LOOKOUT
CANYON. RADAR RAINFALL ESTIMATES INDICATED THAT UP TO AN INCH OF
RAIN PER HOUR WAS FALLING WITH THESE THUNDERSTORMS. THIS WILL
LIKELY CAUSE SMALL STREAMS AND WASHES ON THE KAIBAB PLATEAU IN
NORTHERN COCONINO COUNTY TO QUICKLY FILL WITH WATER.

OUTDOOR ENTHUSIASTS ON THE KAIBAB PLATEAU SHOULD STAY AWAY FROM
AREAS THAT ARE PRONE TO FLASH FLOODING ANDj MOVE TO HIGHER GROUND.
DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS.

MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Aug 22, 9:23 AM MST, 3 hours 43 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
900 AM MST FRI AUG 22 1997

SLOWER START TODAY. MID-LEVELS HAS HAD SOME DRYING AND THE CAPE WILL
BE SOMEWHAT LIMITED TO STOP STRONGER STORMS FROM FORMING. PW SOMEWHAT
HIGH IN THE SOUTHERN REGIONS THAT SMALL STREAM STATEMENTS MAY BE
NEEDED AND THUS SOME CAREFUL MONITORING IF SOME OF THE STORMS START
DUMPING LARGER AMOUNTS SINCE FLOW ALOFT IS VERY WEAK AND STORMS WILL
NOT MOVE VERY FAST ONCE THEY BECOME BIGGER IN SIZE. HOWEVER IF THIS
SUNSHINE CONTINUE WITH THE VERY LITTLE CUMULUS DEVELOPMENT SO FAR WE
MAY SEE OUR MAX REACH 80 DEGREES AND THEN THE CAPE APPROACHES 1000
AND THE SITUATION CHANGES TO FAVOR STRONGER STORMS. SDOME H5 DRYING
NOTED FROM THE SW MAY SLOW DOWN THE ACTIVITY IN THE SW AREA OF CWA
TOWARD EVENING AND SAT. AT FIRST GUESS POPS MAY BE TOO HIGH IN SOME
LOCATIONS ESPECIALLY SAT BUT NO UPDATES PLANNED AT THIS TIME.

FLG 646 INW 535
HP
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.