Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 13, NWS Flagstaff, AZ

July 26, 2007Apache County, Navajo County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 26, 2007, 8:30 PM MST for Apache County, Navajo County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 26, 2007, 8:30 PM MST (03:30 UTC)
Expired
Jul 26, 2007, 11:15 PM MST
In force
3 hr
Issued by
NWS Flagstaff, AZ
Area
Whole counties

Counties Apache County, AZ, Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 149 km from the middle of the area, began a volume at 03:29 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.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 3.5 hours before the alert went out and 173 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 00:00Z on 2007-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 00:00Z on 2007-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -74 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1490 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-74 m²/s²
0-3 km storm-relative helicity
-12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KFGZ 270330
FFWFGZ
AZC001-017-270615-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
830 PM MST THU JUL 26 2007

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL APACHE COUNTY IN NORTHEAST ARIZONA...
  EAST CENTRAL NAVAJO COUNTY IN NORTHEAST ARIZONA...

* UNTIL 1115 PM MST

* AT 820 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM STATIONARY THUNDERSTORMS EXTENDING FROM JUST 
  NORTH OF INTERSTATE 40 NEAR THE PETRIFIED FOREST NATIONAL 
  HEADQUARTERS SOUTHWARD TO INCLUDE PETRIFIED FOREST VISITOR CENTER 
  AND JUST TO THE NORTHWEST OF HUNT. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PETRIFIED
  FOREST N.P. VISITORS CENTER...WOODRUFF...PETRIFIED FOREST 
  NATIONAL  PARK AND PETRIFIED FOREST N.P. HEADQUARTERS AND EASTWARD 
  TO THE CONFLUENCE OF THE LITTLE COLORADO RIVER AND PUERCO RIVER 
  NEAR HOLBROOK.

RADAR ESTIMATES THAT 1 TO 3 INCHES OF RAIN HAS ALREADY FALLEN OVER A 
LARGE AREA. A SPOTTER 7 MILES WEST NORTHWEST OF HUNT HAS REPORTED 
OVER 2 INCHES OF RAIN SO FAR. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 
INCHES ARE POSSIBLE IN THE WARNED AREA. 

EXPECT RAPID RISES ON DEAD WASH...LITHODENDRON WASH...PUERCO 
RIVER...AND LITTLE COLORADO RIVER EFFECTING WOODRUFF.

LAT...LON 3451 10992 3456 10970 3474 10964 3512 10967
      3522 10972 3490 11015

$$
1 follow-up statement
000 
WGUS75 KFGZ 270343
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
833 PM MST THU JUL 26 2007

AZC001-017-270615-
NAVAJO AZ-APACHE AZ-
833 PM MST THU JUL 26 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM MST FOR WEST
CENTRAL APACHE AND EAST CENTRAL NAVAJO COUNTIES...

AT 825 PM MST...TRAINED WEATHER SPOTTERS REPORTED OVER 2 INCHES HAS 
FALLEN IN AN AREA 12 MILES NORTHWEST OF HUNT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PETRIFIED
FOREST N.P. VISITORS CENTER...WOODRUFF...PETRIFIED FOREST 
NATIONAL  PARK AND PETRIFIED FOREST N.P. HEADQUARTERS AND EASTWARD 
TO THE CONFLUENCE OF THE LITTLE COLORADO RIVER AND PUERCO RIVER 
NEAR HOLBROOK.

RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAIN HAS ALREADY FALLEN OVER A 
LARGE AREA. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE 
POSSIBLE IN THE WARNED AREA.  EXPECT RAPID RISES ON DEAD WASH...
LITHODENDRON WASH...PUERCO RIVER...AND LITTLE COLORADO RIVER 
EFFECTING WOODRUFF.

MOTORIST ARE ADVISED TO DRIVE WITH EXTREME CAUTION IN THE WARN AREA 
AS HEAVY RAINFALL CAN OBSCURE THE VISIBLE EVIDENCE OF FLOODWATER 
COVERING OR FLOWING ACROSS ROADWAYS. DO NOT ATTEMPT TO DRIVE ACROSS 
FLOOD ROADWAYS BECAUSE A FOOT OF SWIFTLY FLOWING WATER CAN SWEEP A 
VEHICLE AWAY. ROADS EFFECTED IN THE WARNED AREA INCLUDE BUT ARE NOT 
LIMITED TO INTERSTATE 40...HIGHWAY 180 BETWEEN HUNT AND 
HOLBROOK...AND PETRIFIED FOREST ROAD.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 3451 10992 3456 10970 3474 10964 3512 10967
      3522 10972 3490 11015

$$
TC

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 9:35 PM MSTFlash Flood WarningFGZApache, Navajo115 min
Jul 27, 2:48 PM MSTFlash Flood WarningFGZYavapai42 min
Jul 27, 2:48 PM MSTFlash Flood WarningFGZYavapai42 min
Jul 27, 3:19 PM MSTFlash Flood WarningFGZYavapai56 min
Jul 27, 4:27 PM MSTFlash Flood WarningFGZYavapai93 min

Nearby

Flash Flood Warnings in Arizona, 2007Every flash flood warning in 2007

Sources

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.