Flash Flood Warning 6, NWS Flagstaff, AZ

Issued

Aug 3, 2001, 3:50 PM MST (22:50 UTC)

Expired

Aug 3, 2001, 3:45 PM MST

In force

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 22:54 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 032252 CCA
FFWFLG

AZC005-032345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
350 PM MST FRI AUG 3 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL COCONINO COUNTY IN ARIZONA
  THIS INCLUDES ANTELOPE CANYON

* UNTIL 445 PM MST

* AT 345 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN 6 MILES SOUTHWEST OF LE CHEE.  THE AREA OF HEAVY RAIN WAS
  NEARLY STATIONARY.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.  
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.

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Aug 3, 2:47 PM MST, 1 hour 3 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
215 PM MST FRI AUG 03 2001

.SYNOPSIS...HIGH PRESSURE OVER THE CENTRAL PLAINS IS FORECAST TO
BUILD WESTWARD TOWARDS ARIZONA. THIS WILL CAUSE A CONTINUATION OF
THE MOIST SOUTH TO SOUTHEAST FLOW OVER THE NORTHERN ARIZONA. MONSOONAL
MOISTURE WILL FEED UP INTO NORTHERN ARIZONA THROUGH NEXT WEEK...WITH
DAILY SHOWERS AND THUNDERSTORMS CONTINUING.

.DISCUSSION...NORTHWEST THIRD OF CWA BECAME QUITE ACTIVE TODAY WITH
DISTURBANCE EXITING THE STATE. REST OF CWA WAS SLOW TO START AND
WILL REMAIN ISOLATED THIS EVENING. MOISTURE REMAINS IN PLACE ON
SATURDAY FOR A CONTINUATION OF SHOWER AND THUNDERSTORM ACTIVITY.
SOME DRYING TAKES PLACE IN THE WESTERN ZONES ON SUNDAY AND WILL
DECREASE TO SLIGHT CHANCE WEST OF FLAGSTAFF. FROM FLAGSTAFF
EAST...CHANCE/SCATTERED WORDING. NOT SIGNIFICANT SURFACE TEMPERATURE
OR WIND CHANGE.

EXTENDED...HIGH PRESSURE CENTER MIGRATES TO THE FOUR CORNERS AREA
BY THE END OF THE WEEK. THIS WILL KEEP NORTHERN ARIZONA IN THE
MOIST SOUTHERLY FLOW. NO SIGNIFICANT DRYING OR WARMING SEEN. WILL
KEEP SCATTERED/CHANCE WORDING THROUGH THE WEEK.

MAS
.FGZ...NONE.

In the hours before

AZZ004>018-037>040-261930-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1000 AM MST THU JUL 26 2001

...SCATTERED SHOWERS AND THUNDERSTORMS TODAY WITH LOCALLY HEAVY
RAIN...

A DEEP MOIST SOUTHERLY FLOW OVER ALL OF NORTHERN ARIZONA WILL
PRODUCE ANOTHER ROUND OF SCATTERED THUNDERSTORMS TODAY. STORMS WILL
MOVE SLOWLY TO THE NORTH ADDING TO THE POSSIBILITY OF HEAVY RAIN.
RECENT RAIN HAS LEFT SATURATED SOIL IN SOuME AREAS WHICH COULD
CONTRIBUTE TO RAPID RUNOFF.

SPOTTER REPORTS OF EXCESSIVE RAINFALL AMOUNTS AND SEVERE WEATHER
SHOULD BE RELAYED TO THE NATIONAL WEATHER SERVICE.

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.