Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 48, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 2, 2012, 5:02 PM MST for Pima County, Arizona. It was in force for 118 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 2, 2012, 5:02 PM MST (00:02 UTC)
- Expired
- Sep 2, 2012, 7:00 PM MST
- In force
- 118 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 109 km from the middle of the area, began a volume at 00:03 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 2, 6:30 PM MST | FLASH FLOOD | Topawa, AZ | SWIFT WATER RESCUE...2 PEOPLE RESCUED FROM VEHICLE CAUGHT IN FLASH FLOOD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 0.0 hours before the alert went out and 92 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
- 289 J/kg
- Mixed-layer CIN
- -214 J/kg
- Mixed-layer LCL
- 2494 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
555 WGUS55 KTWC 030002 FFWTWC AZC019-030200- /O.NEW.KTWC.FF.W.0048.120903T0002Z-120903T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 502 PM MST SUN SEP 2 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 700 PM MST * AT 454 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM AN AREA OF STRONG THUNDERSTORMS JUST EAST AND SOUTHEAST OF SELLS...INCLUDING TOPAWA AND FRESNAL CANYON. EXPECT RAINFALL AMOUNTS IN EXCESS OF 2 INCHES IN SOME LOCATIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... FRESNAL WASH...VAMORI WASH...CHUTUM VAYA WASH...SELLS WASH...SAN JUAN WASH...TOPAWA WASH...BAILEY WASH...COMOBABI WASH...ALI MOLINA WASH... BABOQUIVARI WASH...MORAS WASH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3187 11189 3201 11172 3165 11160 3168 11183 $$ MEYER
2 follow-up statements
869 WGUS75 KTWC 030038 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 538 PM MST SUN SEP 2 2012 AZC019-030200- /O.CON.KTWC.FF.W.0048.000000T0000Z-120903T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 538 PM MST SUN SEP 2 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MST FOR SOUTH CENTRAL PIMA COUNTY... AT 535 PM MST...SHOWERS AND THUNDERSTORMS WERE BEGINNING TO WEAKEN EAST AND SOUTHEAST OF SELLS...INCLUDING AREAS AROUND TOPAWA AND FRESNAL CANYON. EARLIER STORM TOTALS WERE ESTIMATED TO BE BETWEEN 2 AND 3 INCHES WITH HEAVY FLOW EXPECTED TO CONTINUE TO GENERATE FLASH FLOODING OVER THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... FRESNAL WASH...VAMORI WASH...CHUTUM VAYA WASH...SELLS WASH...SAN JUAN WASH...TOPAWA WASH...BAILEY WASH...COMOBABI WASH...ALI MOLINA WASH...BABOQUIVARI WASH...MORAS WASH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3187 11189 3201 11172 3165 11160 3168 11183 $$ MEYER
060 WGUS75 KTWC 030152 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 652 PM MST SUN SEP 2 2012 AZC019-030201- /O.EXP.KTWC.FF.W.0048.000000T0000Z-120903T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 652 PM MST SUN SEP 2 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM MST FOR SOUTH CENTRAL PIMA COUNTY... AT 650 PM MST SHOWERS AND THUNDERSTORMS HAD ENDED IN THE WARNING AREA EAST AND SOUTHEAST OF SELLS. EXPECT HEAVY FLOW IN NORMALLY DRY STREAMBEDS AND WASHES TO CONTINUE OVERNIGHT. LAT...LON 3187 11189 3201 11172 3165 11160 3168 11183 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 6:59 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 2 hr |
| 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.