Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 71, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 7, 2012, 1:58 PM MST for Cochise 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 outline as issued.
The facts
- Issued
- Sep 7, 2012, 1:58 PM MST (20:58 UTC)
- Expired
- Sep 7, 2012, 5:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 92 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 107 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
- 1118 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
806 WGUS55 KTWC 072058 FFWTWC AZC003-080000- /O.NEW.KTWC.FF.W.0071.120907T2058Z-120908T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 158 PM MST FRI SEP 7 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN COCHISE COUNTY IN SOUTHEAST ARIZONA... THIS INCLUDES THE CITY OF WILLCOX... * UNTIL 500 PM MST * AT 150 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN AND LIKELY FLASH FLOODING FROM A THUNDERSTORM OVER THE WILLCOX AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WILLCOX. COCHISE AND BOWIE ARE ALSO INCLUDED IN THIS WARNING WHERE ADDITIONAL HEAVY RAIN MAY FALL. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. 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 3242 11004 3242 10937 3213 10931 3206 11010 $$ KD
2 follow-up statements
127 WGUS75 KTWC 072210 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 310 PM MST FRI SEP 7 2012 AZC003-080000- /O.CON.KTWC.FF.W.0071.000000T0000Z-120908T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 310 PM MST FRI SEP 7 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM MST FOR NORTHERN COCHISE COUNTY... AT 303 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER SOUTHEAST OF WILLCOX ALONG AND SOUTH OF ROUTE 186 NEAR SOUTH BUTTERFIELD ROAD AND OTHER ROADS IN THE AREA. LOCATIONS IN THE WARNING ARE MAINLY CONFINED TO RURAL AREAS BETWEEN HIGHWAY 191 AND ROUTE 186 SOUTHEAST OF WILLCOX. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 3242 11004 3242 10937 3213 10931 3206 11010 $$ KD
176 WGUS75 KTWC 072358 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 458 PM MST FRI SEP 7 2012 AZC003-080006- /O.EXP.KTWC.FF.W.0071.000000T0000Z-120908T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 458 PM MST FRI SEP 7 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 500 PM MST FOR NORTHERN COCHISE COUNTY... RADAR INDICATED THAT HEAVY RAIN HAS ENDED ACROSS NORTHERN COCHISE COUNTY. FLOW IS WASHES AND STREAMS LIKELY HAS STARTED TO RECEDED. ADDITIONAL RAINFALL IS POSSIBLE BETWEEN 630 PM AND 8 PM IF THE STORMS UP NEAR SAFFORD CONTINUE TO MOVE TO THE SOUTHWEST. LAT...LON 3242 11004 3242 10937 3213 10931 3206 11010 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 5:15 PM MST | Flash Flood Warning | TWC | Pinal | 90 min |
| Sep 6, 5:37 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 38 min |
| Sep 6, 5:54 PM MST | Flash Flood Warning | TWC | Greenlee | 111 min |
| Sep 6, 8:48 PM MST | Flash Flood Warning | TWC | Graham | 117 min |
| Sep 6, 9:14 PM MST | Special Weather Statement | TWC | Graham | 46 min |
| Sep 7, 4:50 AM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 7, 5:47 AM MST | Flash Flood Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 12 hr |
| Sep 7, 6:13 AM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 7, 6:21 AM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Sep 7, 7:44 AM MST | Areal Flood Warning | TWC | Pima | 6 hr |
| Sep 7, 12:55 PM MST | Flash Flood Warning | TWC | Cochise, Santa Cruz | 110 min |
| Sep 7, 1:08 PM MST | Flash Flood Warning | TWC | Cochise | 112 min |
| Sep 7, 2:45 PM MST | Areal Flood Advisory | TWC | Cochise | 90 min |
| Sep 7, 3:35 PM MST | Areal Flood Advisory | TWC | Cochise | 115 min |
| Sep 7, 3:47 PM MST | Flash Flood Warning | TWC | Greenlee | 118 min |
| Sep 7, 4:52 PM MST | Special Weather Statement | TWC | Graham | 23 min |
Nearby
Flash Flood Warnings in Arizona, 2012Every flash flood warning in 2012
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.