Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 69, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 7, 2012, 12:55 PM MST for Cochise County, Santa Cruz County, Arizona. It was in force for 110 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
- Sep 7, 2012, 12:55 PM MST (19:55 UTC)
- Expired
- Sep 7, 2012, 2:45 PM MST
- In force
- 110 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cochise County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 39 km from the middle of the area, began a volume at 19:58 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, 7.9 hours before the alert went out and 78 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.
137 WGUS55 KTWC 071955 FFWTWC AZC003-023-072145- /O.NEW.KTWC.FF.W.0069.120907T1955Z-120907T2145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1255 PM MST FRI SEP 7 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA... THIS INCLUDES THE CITY OF SIERRA VISTA... EASTERN SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA... * UNTIL 245 PM MST * AT 1244 PM MST...RADAR INDICATED HEAVY RAIN OF AN INCH TO AN INCH AND ONE HALF NEAR HUACHUCA CITY. IN ADDITION A SPOTTER REPORTED SIX TENTHS OF AN INCH OF RAIN IN 15 MINUTES IN SIERRA VISTA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUACHUCA CITY...FORT HUACHUCA...SIERRA VISTA...CANELO...PARKER CANYON LAKE AND THE MONUMENT FIRE BURN SCAR AREA. 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 3173 11070 3173 11018 3134 11007 3134 11067 $$ KD
2 follow-up statements
789 WGUS75 KTWC 072057 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 157 PM MST FRI SEP 7 2012 AZC003-023-072145- /O.CON.KTWC.FF.W.0069.000000T0000Z-120907T2145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ-SANTA CRUZ AZ- 157 PM MST FRI SEP 7 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM MST FOR EASTERN SANTA CRUZ AND SOUTHWESTERN COCHISE COUNTIES... AT 145 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED AREA. PRECIPITATION ESTIMATES OF OVER 2 INCHES HAVE BEEN OBSERVED OVER THE NORTHERN PORTION OF SIERRA VISTA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SIERRA VISTA...FORT HUACHUCA...WHETSTONE...SONOITA AND FAIRBANK. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 3173 11070 3173 11018 3134 11007 3134 11067 $$
080 WGUS75 KTWC 072141 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 241 PM MST FRI SEP 7 2012 AZC003-023-072148- /O.EXP.KTWC.FF.W.0069.000000T0000Z-120907T2145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ-SANTA CRUZ AZ- 241 PM MST FRI SEP 7 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 245 PM MST FOR EASTERN SANTA CRUZ AND SOUTHWESTERN COCHISE COUNTIES... RADAR INDICATED THAT THE HEAVIEST RAIN HAD ENDED IN THE WARNED AREA. RADAR RAINFALL ESTIMATES TOTALED OVER 2 INCHES NEAR CANELO AND NORTH OF SIERRA VISTA. SOME RUNOFF INTO SMALL STREAMS AND WASHES WILL CONTINUE THIS AFTERNOON. A FLASH FLOOD WATCH CONTINUES ACROSS MUCH OF SOUTHERN ARIZONA UNTIL 10 PM. TO REPORT FLASH FLOODING CONTACT LOCAL LAW ENFORCEMENT AND ASK THEM RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 3173 11070 3173 11018 3134 11007 3134 11067 $$ KD
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, 1:08 PM MST | Flash Flood Warning | TWC | Cochise | 112 min |
| Sep 7, 1:58 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| 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.