Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 59, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 6, 2012, 1:48 PM MST for Pima 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 6, 2012, 1:48 PM MST (20:48 UTC)
- Expired
- Sep 6, 2012, 4:45 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Phoenix radar (KIWA), 155 km from the middle of the area, began a volume at 20:51 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 12:00Z, 8.8 hours before the alert went out and 152 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
- 888 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1475 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
859 WGUS55 KTWC 062048 FFWTWC AZC019-062345- /O.NEW.KTWC.FF.W.0059.120906T2048Z-120906T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 148 PM MST THU SEP 6 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... WESTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 445 PM MST * AT 139 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM THUNDERSTORMS OVER AJO...KUAKATCH AND EAST OF LUKEVILLE. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AJO... KUAKATCH AND GU VO. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TUCSON. && LAT...LON 3250 11295 3250 11258 3177 11245 3191 11289 $$ KD
2 follow-up statements
721 WGUS75 KTWC 062217 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 317 PM MST THU SEP 6 2012 AZC019-062345- /O.CON.KTWC.FF.W.0059.000000T0000Z-120906T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 317 PM MST THU SEP 6 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM MST FOR WESTERN PIMA COUNTY... AT 301 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED AREA. PIMA COUNTY SHERIFF OFFICE HAS REPORTED MULTIPLE WASHES FLOODED IN AJO. PRECIPITATION ESTIMATES INDICATED UP TO 2 INCHES PER HOUR RAINFALL RATES ARE STILL OCCURRING. DRIVERS SHOULD USE EXTREME CAUTION IF TRAVELING IN THIS AREA. LAT...LON 3250 11295 3250 11258 3177 11245 3191 11289 $$
778 WGUS75 KTWC 062344 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 444 PM MST THU SEP 6 2012 AZC019-062352- /O.EXP.KTWC.FF.W.0059.000000T0000Z-120906T2345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 444 PM MST THU SEP 6 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 445 PM MST FOR WESTERN PIMA COUNTY... ALTHOUGH RAINFALL HAS WEAKENED ACROSS WESTERN PIMA COUNTY...WEATHER RADAR ESTIMATED 1.50 TO 2.25 INCHES OF RAIN HAD FALLEN NEAR THE TOWN OF AJO...AND ALONG HIGHWAY 85 BETWEEN WHY AND ORGAN PIPE NATIONAL MONUMENT. EXPECT HEAVY FLOWS IN THE GIBSON ARROYO AND SIKORT CHUAPO WASH NEAR AJO...AS WELL AS THE GROWLER...KUAKATCH AND ALAMO WASHES SOUTH OF WHY. ALTHOUGH AMPLE TIME HAS ELAPSED WHERE FLASH FLOODING IS NO LONGER A THREAT...SIGNIFICANT WATER FLOWING IN NORMALLY DRY WASHES...ROADWAY DIPS AND OTHER LOW LYING AREAS IS STILL LIKELY TO RESULT IN MINOR FLOODING ISSUES. 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 3250 11295 3250 11258 3177 11245 3191 11289 $$
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, 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, 2:48 PM MST | Flash Flood Warning | TWC | Pima | 117 min |
| 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.