Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 46, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 17, 2011, 4:30 PM MST for Cochise County, Arizona. It was in force for 90 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 17, 2011, 4:30 PM MST (23:30 UTC)
- Expired
- Aug 17, 2011, 6:00 PM MST
- In force
- 90 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 60 km from the middle of the area, began a volume at 23:31 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, 11.5 hours before the alert went out and 99 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
- 901 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1550 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
388
WGUS55 KTWC 172330
FFWTWC
AZC003-180100-
/O.NEW.KTWC.FF.W.0046.110817T2330Z-110818T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
430 PM MST WED AUG 17 2011
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 600 PM MST
* AT 425 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A CLUSTER OF THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL OVER
SOUTHWEST COCHISE COUNTY...FROM THE CHARLESTON AREA TO EASTERN
AREAS OF SIERRA VISTA TO NEAR THE JUNCTIONS OF STATE HIGHWAY 80
AND STATE HIGHWAY 90.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CHARLESTON
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO 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.
&&
LAT...LON 3152 11025 3166 11026 3168 11016 3169 11004
3154 10992 3146 10996 3145 11016
$$
ZELL2 follow-up statements
948
WGUS75 KTWC 172359
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
459 PM MST WED AUG 17 2011
AZC003-180100-
/O.CON.KTWC.FF.W.0046.000000T0000Z-110818T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
459 PM MST WED AUG 17 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...
AT 555 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAINFALL IN SOUTHWEST
COCHISE COUNTY...EAST OF SIERRA VISTA AND SOUTH OF CHARLESTON. RADAR
RAINFALL ESTIMATES FROM THIS LOCATION INDICATED THAT BETWEEN TWO AND
THREE INCHES OF RAINFALL HAS FALLEN. SHERIFF DISPATCH INDICATED
THAT WATER WAS FLOWING OVER STATE HIGHWAY 90 IN THE WARNING AREA.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CHARLESTON
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3152 11025 3166 11026 3168 11016 3169 11004
3154 10992 3146 10996 3145 11016
$$
ZELL693
WGUS75 KTWC 180058
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
558 PM MST WED AUG 17 2011
AZC003-180107-
/O.EXP.KTWC.FF.W.0046.000000T0000Z-110818T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
558 PM MST WED AUG 17 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 600 PM MST FOR SOUTHWESTERN
COCHISE COUNTY...
AT 555 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED THAT ONLY
LIGHT SHOWERS REMAINED OVER THE WARNING AREA IN THE SOUTHWEST
COCHISE COUNTY. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED
TO EXPIRE.
LAT...LON 3152 11025 3166 11026 3168 11016 3169 11004
3154 10992 3146 10996 3145 11016
$$
ZELLThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 12:22 PM MST | Areal Flood Advisory | TWC | Cochise | 83 min |
| Aug 17, 1:17 PM MST | Special Weather Statement | TWC | 43 min | |
| Aug 17, 2:29 PM MST | Flash Flood Warning | TWC | Cochise | 91 min |
| Aug 17, 2:44 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 31 min |
| Aug 17, 3:25 PM MST | Areal Flood Advisory | TWC | Pinal | 80 min |
| Aug 17, 3:44 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Aug 17, 3:53 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 37 min |
| Aug 17, 4:27 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 33 min |
| Aug 17, 4:57 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 33 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.