Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 60, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 6, 2012, 2:06 PM MST for Pima County, Arizona. It was in force for 84 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 6, 2012, 2:06 PM MST (21:06 UTC)
- Expired
- Sep 6, 2012, 3:30 PM MST
- In force
- 84 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 27 km from the middle of the area, began a volume at 21:10 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 6, 2:37 PM MST | FLASH FLOOD | 2 Wnw Corona De Tucson, AZ | SAHUARITA ROAD IMPASSABLE AT OCOTILLO VIEW |
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 12:00Z, 9.1 hours before the alert went out and 17 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.
933 WGUS55 KTWC 062106 FFWTWC AZC019-062230- /O.NEW.KTWC.FF.W.0060.120906T2106Z-120906T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 206 PM MST THU SEP 6 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 330 PM MST * AT 200 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER SAHUARITA ROAD WEST OF CORONA DE TUCSON. A SPOTTER REPORTED THREE QUARTERS OF AN INCH OF RAIN IN LESS THAN 30 MINUTES. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAHUARITA ROAD FROM SAHUARITA TO CORONA DE TUCSON. 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 3208 11101 3206 11069 3194 11070 3192 11098 $$ KD
1 follow-up statement
874 WGUS75 KTWC 062226 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 326 PM MST THU SEP 6 2012 AZC019-062232- /O.EXP.KTWC.FF.W.0060.000000T0000Z-120906T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 326 PM MST THU SEP 6 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 330 PM MST FOR EAST CENTRAL PIMA COUNTY... THE INTENSE PRECIPITATION IN EAST CENTRAL PIMA COUNTY HAS DECREASED. RADAR INDICATES LIGHT SHOWERS REMAIN WITH RAINFALL RATES ABOUT ONE QUARTER OF AN INCH PER HOUR. LAW ENFORCEMENT REPORTED THAT SAHUARITA ROAD REMAINS IMPASSABLE. LOW WATER CROSSING AND WASHES WILL CONTINUE TO FLOW FOR THE NEXT COUPLE OF HOURS. DRIVERS SHOULD USE CAUTION WHEN APPROACHING WATER CROSSINGS. LAT...LON 3208 11101 3206 11069 3194 11070 3192 11098 $$
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, 2:30 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.