Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 52, NWS Tucson, AZ

August 23, 2007Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 23, 2007, 12:03 AM MST for Cochise County, Arizona. It was in force for 87 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 23, 2007, 12:03 AM MST (07:03 UTC)
Expired
Aug 23, 2007, 1:30 AM MST
In force
87 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text
Flood severity
None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 116 km from the middle of the area, began a volume at 07:06 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.

What was reported inside it

TimeReportWhereRemark
Aug 23, 12:29 AM MSTFLASH FLOODDouglas, AZDOUGLAS PD REPORTED THAT AREAS OF DOUGLAS EXPERIENCED FLASH FLOODING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KDMA), launched 00:00Z, 7.1 hours before the alert went out and 155 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, Tuscon, AZ at 00:00Z on 2007-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 845 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 2007-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 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
845 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
2821 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
-6 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 KTWC 230705
FFWTWC
AZC003-230830-
/X.NEW.KTWC.FF.W.0052.070823T0703Z-070823T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1203 AM MST THU AUG 23 2007

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF DOUGLAS...

* UNTIL 130 AM MST

* AT 1157 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  HEAVY RAIN THUNDERSTORMS ACROSS FAR SOUTHEAST COCHISE COUNTY. THIS 
  INCLUDES THE CITY OF DOUGLAS AND THE TOWN OF PIRTLEVILLE. DOPPLER  
  RADAR INDICATED THAT BETWEEN ONE AND TWO INCHES OF RAIN HAS FALLEN 
  IN AND AROUND DOUGLAS DURING THE PAST HOUR.

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.

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

THIS FLASH FLOOD WARNING UPGRADES AND REPLACES THE URBAN AND SMALL
STREAM FLOOD ADVISORY FOR THIS AREA.

LAT...LON 3120 10984 3108 10954 3142 10927 3152 10971

$$

WEATHER.GOV/TUCSON
2 follow-up statements
000 
WGUS75 KTWC 230744
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1242 AM MST THU AUG 23 2007

AZC003-230830-
/X.CON.KTWC.FF.W.0052.000000T0000Z-070823T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1242 AM MST THU AUG 23 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM MST FOR SOUTH
CENTRAL COCHISE COUNTY...

AT 1235 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE HEAVY RAIN ACROSS FAR SOUTHEAST COCHISE COUNTY HAS ENDED. 
RADAR ESTIMATED THAT BETWEEN ONE AND TWO INCHES OF RAIN HAD FALLEN 
IN AND AROUND THE CITY OF DOUGLAS...WITH LOCALIZED AREAS UP TO 3 
INCHES. FLOODING OF WASHES IS LIKELY OCCURRING AT THIS TIME ALONG 
WITH STANDING WATER ON ROADWAYS. 

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.

LAT...LON 3120 10984 3108 10954 3142 10927 3152 10971

$$

WEATHER.GOV/TUCSON
000 
WGUS75 KTWC 230829
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
128 AM MST THU AUG 23 2007

AZC003-230838-
/X.EXP.KTWC.FF.W.0052.000000T0000Z-070823T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
128 AM MST THU AUG 23 2007

...THE FLASH FLOOD WARNING WILL EXPIRE AT 130 AM MST FOR SOUTH
CENTRAL COCHISE COUNTY...

RUNOFF WILL CONTINUE ACROSS SOUTHEAST COCHISE COUNTY THROUGH 2 AM. 
THE THREAT OF FLASH FLOODING IS OVER. DOUGLAS POLICE DEPARTMENT 
REPORTED THAT THERE WERE AREA IN DOUGLAS THAT EXPERIENCED FLASH 
FLOODING.

NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED
AREAS. THE WATER MAY BE TO DEEP TO ALLOW FOR SAFE PASSAGE.

LAT...LON 3120 10984 3108 10954 3142 10927 3152 10971

$$

WEATHER.GOV/TUCSON

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 11:44 PM MSTAreal Flood AdvisoryTWCCochise22 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.