Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 38, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 9, 2011, 2:01 PM MST for Cochise County, Arizona. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2011, 2:01 PM MST (21:01 UTC)
- Expired
- Aug 9, 2011, 3:30 PM MST
- In force
- 89 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 55 km from the middle of the area, began a volume at 21:01 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
Tuscon, AZ (KTUS), launched 12:00Z, 9.0 hours before the alert went out and 95 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.
- Mixed-layer CAPE
- 282 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1487 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
759
WGUS55 KTWC 092101
FFWTWC
AZC003-092230-
/O.NEW.KTWC.FF.W.0038.110809T2101Z-110809T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
201 PM MST TUE AUG 9 2011
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 330 PM MST
* AT 155 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A STRONG THUNDERSTORM GENERATING HEAVY RAIN OVER CARR CANYON...
MILLER CANYON...AND HUNTER CANYON SOUTH OF SIERRA VISTA...ABOUT
7 MILES SOUTHWEST OF SIERRA VISTA...MOVING NORTHWEST AT 5 MPH.
* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
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.
&&
LAT...LON 3136 11025 3141 11040 3147 11045 3153 11044
3155 11041 3154 11031 3147 11026
$$
ZELL2 follow-up statements
953
WGUS75 KTWC 092139
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
239 PM MST TUE AUG 9 2011
AZC003-092230-
/O.CON.KTWC.FF.W.0038.000000T0000Z-110809T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
239 PM MST TUE AUG 9 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...
AT 235 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A STRONG THUNDERSTORM PRODUCING HEAVY RAINFALL OVER THE
HUACHUCA MOUNTAINS. ALTHOUGH THE BULK OF THE RAINFALL HAD MOVED
NORTHWEST OF THE MONUMENT FIRE BURN AREA...THE HEAVY RAINFALL THAT
FELL WILL CONTINUE TO RESULT IN FLASH FLOODING. THIS STORM WAS
MOVING SLOWLY NORTHWEST AT 5 MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3136 11025 3141 11040 3147 11045 3153 11044
3155 11041 3154 11031 3147 11026
$$
ZELL331
WGUS75 KTWC 092237
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
337 PM MST TUE AUG 9 2011
AZC003-092241-
/O.EXP.KTWC.FF.W.0038.000000T0000Z-110809T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
337 PM MST TUE AUG 9 2011
...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHWESTERN COCHISE
COUNTY...
AT 330 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
SCATTERED SHOWERS AND THUNDERSTORMS CONTINUING ACROSS THE HUACHUCA
MOUNTAINS. HOWEVER...THESE SHOWERS AND THUNDERSTORMS HAVE WEAKENED
SINCE 230 PM MST. ALTHOUGH ADDITIONAL MAINLY LIGHT RAINFALL IS
EXPECTED LATER THIS AFTERNOON...THE THREAT OF FLASH FLOODING
PARTICULARLY ASSOCIATED WITH THE MONUMENT FIRE BURN AREA HAS
DIMINISHED. THUS THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3136 11025 3141 11040 3147 11045 3153 11044
3155 11041 3154 11031 3147 11026
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 2:16 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 89 min |
Nearby
Flash Flood Warnings in Arizona, 2011Every flash flood warning in 2011
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.