Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 62, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 6, 2012, 2:48 PM MST for Pima County, Arizona. It was in force for 117 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 6, 2012, 2:48 PM MST (21:48 UTC)
- Expired
- Sep 6, 2012, 4:45 PM MST
- In force
- 117 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 75 km from the middle of the area, began a volume at 21:47 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, 9.8 hours before the alert went out and 40 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
- 1314 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
753 WGUS55 KTWC 062148 FFWTWC AZC019-062345- /O.NEW.KTWC.FF.W.0062.120906T2148Z-120906T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 248 PM MST THU SEP 6 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 445 PM MST * AT 245 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM WEST OF AVRA VALLEY...SOUTH THROUGH SAGUARO NATIONAL PARK...AND PICTURE ROCKS...TO RYAN AIRFIELD. THE STORMS WERE MOVING SLOWLY NORTHWEST AT 5 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AVRA VALLEY 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 3209 11139 3250 11157 3250 11124 3208 11096 $$ ZELL
3 follow-up statements
241 WGUS75 KTWC 062223 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 323 PM MST THU SEP 6 2012 AZC019-062345- /O.CON.KTWC.FF.W.0062.000000T0000Z-120906T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 323 PM MST THU SEP 6 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM MST FOR CENTRAL PIMA COUNTY... AT 320 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THE LINE OF THUNDERSTORMS EXTENDED FROM NEAR MARANA...SOUTH THROUGH PICTURE ROCKS TO RYAN AIRFIELD. THE STORMS WERE MOVING SLOWLY NORTHWEST AT 5 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SILVER BELL. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && LAT...LON 3209 11139 3250 11157 3250 11124 3208 11096 $$ ZELL
466
WGUS75 KTWC 062323
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
423 PM MST THU SEP 6 2012
AZC019-062345-
/O.CON.KTWC.FF.W.0062.000000T0000Z-120906T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
423 PM MST THU SEP 6 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM MST FOR
CENTRAL PIMA COUNTY...
AT 500 PM MST...ALTHOUGH RAINFALL HAS WEAKENED OVER THE AREA...
WEATHER SERVICE RADAR INDICATED THAT BETWEEN 1.5 AND 2.50 INCHES OF
RAIN HAD FALLEN IN AN AREA FROM RYAN FIELD...NORTHWEST TOWARD
SAGUARO NATIONAL PARK WEST...TO SILVERBELL. IN FACT...A TRAINED
WEATHER SPOTTER REPORTED 1.60 INCHES OF RAIN HAD FALLEN IN ONLY 30
MINUTES. EXPECT RAINFALL RUNOFF TO CONTINUE TO RAPIDLY DRAIN INTO
BRAWLEY AND BLANCO WASHES RESULTING IN FLASH FLOODING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAGUARO
NATIONAL PARK WEST...RYAN FIELD AND PICTURE ROCKS
LAT...LON 3210 11119 3221 11132 3237 11150 3239 11133
3230 11115 3224 11108 3215 11102
$$390
WGUS75 KTWC 062342
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
442 PM MST THU SEP 6 2012
AZC019-062351-
/O.EXP.KTWC.FF.W.0062.000000T0000Z-120906T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
442 PM MST THU SEP 6 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 445 PM MST FOR CENTRAL PIMA
COUNTY...
ALTHOUGH RAINFALL HAS WEAKENED OVER THE AREA... WEATHER SERVICE
RADAR INDICATED THAT BETWEEN 1.5 AND 2.50 INCHES OF RAIN HAD FALLEN
IN AN AREA ALONG A LINE FROM RYAN FIELD...NORTHWEST TOWARD SAGUARO
NATIONAL PARK WEST...NORTHWEST TO SILVERBELL. A TRAINED WEATHER
SPOTTER REPORTED 1.60 INCHES OF RAIN HAD FALLEN IN ONLY 30 MINUTES.
EXPECT RAINFALL RUNOFF TO CONTINUE TO RAPIDLY DRAIN INTO BRAWLEY AND
BLANCO WASHES.
A SMALL STREAM FLOOD ADVISORY WILL REMAIN IN EFFECT UNTIL 1000 PM
MST FOR SOUTHERN PINAL...PIMA...SANTA CRUZ AND EXTREME SOUTHWESTERN
COCHISE COUNTIES.
LAT...LON 3210 11119 3221 11132 3237 11150 3239 11133
3230 11115 3224 11108 3215 11102
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 5:33 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 5, 6:30 PM MST | Special Weather Statement | TWC | Greenlee | 30 min |
| Sep 6, 12:13 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Sep 6, 12:55 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Sep 6, 1:19 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Santa Cruz | 116 min |
| Sep 6, 1:39 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Sep 6, 1:48 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Sep 6, 2:06 PM MST | Flash Flood Warning | TWC | Pima | 84 min |
| Sep 6, 2:30 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 2 hr |
| Sep 6, 2:50 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 3 hr |
| Sep 6, 2:55 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 35 min |
| Sep 6, 3:04 PM MST | Flash Flood Warning | TWC | Santa Cruz | 116 min |
| Sep 6, 3:17 PM MST | Severe Thunderstorm Warning | TWC | Pima | 24 min |
| Sep 6, 3:36 PM MST | Flash Flood Warning | TWC | Pima | 114 min |
| Sep 6, 4:05 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Pinal, Santa Cruz | 6 hr |
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.