Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 50, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 2, 2012, 6:59 PM MST for Pima County, Pinal County, Arizona. It was in force for 2 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 2, 2012, 6:59 PM MST (01:59 UTC)
- Expired
- Sep 2, 2012, 9:00 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Pima County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 94 km from the middle of the area, began a volume at 01:59 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
Phoenix, AZ (KPSR), launched 00:00Z, 2.0 hours before the alert went out and 105 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
- 300 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 2793 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -3 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.
204 WGUS55 KTWC 030159 FFWTWC AZC019-021-030400- /O.NEW.KTWC.FF.W.0050.120903T0159Z-120903T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 659 PM MST SUN SEP 2 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... SOUTHWESTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 900 PM MST * AT 648 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LARGE ARE OF THUNDERSTORMS GENERATING HEAVY RAIN IN NORTH CENTRAL PORTIONS OF THE TOHONO O'ODHAM NATION...GENERALLY FROM NEAR AND EAST OF SANTA ROSA...NORTHWARD THROUGH ANEGAM AND THE NORTH KOMELIK AREA. * LOCATIONS IN THE WARNING ALSO INCLUDE BUT ARE NOT LIMITED TO KOHATK AND JACKRABBIT. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... SIL NAKYA WASH...SANTA ROSA WASH...KOHATK WASH...AGUIRRE WASH...GU ACHI WASH...ANEGAM WASH...BITTER WELL WASH AND QUIJOTOA WASH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...HIGHWAYS AND ROADS AS WELL AS OTHER LOW LYING AREAS. && LAT...LON 3267 11219 3261 11175 3227 11171 3222 11216 $$ MEYER
2 follow-up statements
253 WGUS75 KTWC 030249 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 749 PM MST SUN SEP 2 2012 AZC019-021-030400- /O.CON.KTWC.FF.W.0050.000000T0000Z-120903T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ-PINAL AZ- 749 PM MST SUN SEP 2 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM MST FOR SOUTHWESTERN PINAL AND NORTH CENTRAL PIMA COUNTIES... AT 745 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE AN AREA OF STRONG THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN NORTH CENTRAL PORTIONS OF THE TOHONO O'ODHAM NATION FROM NEAR SANTA ROSA NORTHWARD TO NEAR KOHATK. RADAR ESTIMATED RAINFALL AMOUNTS RANGED BETWEEN 1 AND 3 INCHES ACROSS THE AREA. LOCATIONS IN THE WARNING ALSO INCLUDE BUT ARE NOT LIMITED TO NORTH KOMELIK...ANEGAM AND JACKRABBIT. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... SIL NAKYA WASH...SANTA ROSA WASH...KOHATK WASH...AGUIRRE WASH...GU ACHI WASH...ANEGAM WASH...BITTER WELL WASH AND QUIJOTOA WASH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...HIGHWAYS AND ROADS...AS WELL AS OTHER LOW LYING AREAS. && LAT...LON 3267 11219 3261 11175 3227 11171 3222 11216 $$ MEYER
015 WGUS75 KTWC 030401 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 901 PM MST SUN SEP 2 2012 AZC019-021-030409- /O.EXP.KTWC.FF.W.0050.000000T0000Z-120903T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ-PINAL AZ- 901 PM MST SUN SEP 2 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 900 PM MST FOR SOUTHWESTERN PINAL AND NORTH CENTRAL PIMA COUNTIES... AT 855 PM MST SHOWERS AND THUNDERSTORMS CONTINUED TO WEAKEN ACROSS NORTH CENTRAL PORTIONS OF THE TOHONO O'ODHAM NATION WITH STRONGER STORMS HAVING MOVED WEST OF THE AREA. HEAVY FLOW WILL CONTINUE IN STREAMS AND WASHES OVERNIGHT...AND A SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT UNTIL 215 AM MST. LAT...LON 3267 11219 3261 11175 3227 11171 3222 11216 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 5:02 PM MST | Flash Flood Warning | TWC | Pima | 118 min |
| Sep 2, 5:10 PM MST | Flash Flood Warning | TWC | Pima | 80 min |
| Sep 2, 5:25 PM MST | Blowing Dust Advisory | TWC | Pima, Pinal | 100 min |
| Sep 2, 5:52 PM MST | Special Weather Statement | TWC | Pima | 38 min |
| Sep 2, 8:22 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Sep 2, 8:40 PM MST | Flash Flood Warning | TWC | Pima | 80 min |
| Sep 3, 1:47 PM MST | Flash Flood Warning | TWC | Cochise | 118 min |
| Sep 3, 3:03 PM MST | Special Weather Statement | TWC | Santa Cruz | 42 min |
| Sep 3, 3:25 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Sep 3, 3:35 PM MST | Special Weather Statement | TWC | Santa Cruz | 40 min |
| Sep 3, 3:57 PM MST | Areal Flood Advisory | TWC | Cochise | 93 min |
| Sep 3, 4:05 PM MST | Flash Flood Warning | TWC | Cochise | 115 min |
| Sep 3, 4:28 PM MST | Severe Thunderstorm Warning | TWC | Pima | 47 min |
| Sep 3, 4:46 PM MST | Flash Flood Warning | TWC | Pima | 119 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.