Flash Flood Warning 14, NWS Flagstaff, AZ

Issued

Sep 15, 2001, 4:37 PM MST (23:37 UTC)

Expired

Sep 15, 2001, 6:30 PM MST

In force

113 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Coconino County, AZ

The Flagstaff radar (KFSX), 77 km from the middle of the area, began a volume at 23:38 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 
WGUS55 KFGZ 152340
FFWFLG
AZC005-160230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
437 PM MST SAT SEP 15 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL COCONINO COUNTY IN ARIZONA
  THIS INCLUDES THE CITIES OF...FLAGSTAFF...COSNINO

* UNTIL 730 PM MST

* AT 437 PM MST...THE PUBLIC REPORTED A LEVEE BREAK NEAR WALNUT 
MEADOWS...OR IN SOUTHEAST FLAGSTAFF. WATER IS RISING THROUGHOUT THIS 
AREA.  IF YOU ARE IN THIS AREA SEEK HIGHER GROUND IMMEDIATELY

EXCESSIVE RUNOFF WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND 
STREAMS...ROADWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND 
FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING 
AREAS ARE SUBJECT TO FLASH FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

LAT...LON 3526 11145 3514 11149 3513 11165 3526 11165

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Sep 15, 2:30 PM MST, 2 hours 7 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
949 AM MST SAT SEP 15 2001

.SYNOPSIS...ABUNDANT SUBTROPICAL MOISTURE ACROSS THE REGION WILL
BRING ANOTHER ROUND OF THUNDERSTORMS TO THE REGION TODAY. SOME OF
THE STORMS WILL PRODUCE HEAVY RAINFALL...ESPECIALLY OVER CENTRAL
ARIZONA. A CHANCE OF SHOWERS AND THUNDERSTORMS WILL RETURN SUNDAY
AND MONDAY. MUCH DRIER WESTERLY FLOW WILL TAKE HOLD BY TUESDAY...
WITH DRY AND WARM CONDITIONS EXPECTED THE REMAINDER OF THE WEEK.

.DISCUSSION...GOOD FORECAST FROM THE EARLY MORNING PACKAGE. MAIN
HIGHLIGHTS .4 INCH PRECIP WATER ALONG THE UTAH AND ARIZONA BORDER
INCREASING TO AROUND AND INCH SOUTHERN YAVAPAI AND NORTHERN GILA
COUNTIES. SOUNDING FROM THE MESO ETA SHOWING INVERTED V SOUNDINGS TO
THE NORTH...DYNAMIC FORCING (DIVQ AND OMEGA) WEAK SO THUNDERSTORMS
ROUGHLY NORTH OF I-40 WILL HAVE THE POTENTIAL OF PRODUCING SOME
STRONG GUSTY WIND AND SMALL HAIL. TO THE SOUTH OF INTERSTATE 40
MOISTURE IS DEEPER...MESO ETA SOUNDINGS SUGGEST STEEPER LAPSE
RATES...FLOW IS WEAK AS WELL AS THE DYNAMIC FORCING DOWN IN THE
NOISE LEVEL...SO THE STORMS ALONG AND SOUTH OF I-40 WILL BE
STRONG PULSE AND TERRAIN DRIVEN...WITH THE MAIN THREAT...LOCALIZED
HEAVY RAINFALL.

CLEMMONS
.FGZ...NONE.

Flash Flood Warnings in Arizona, 2001Every flash flood warning in 2001

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.