Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 75, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 10, 2012, 1:27 PM MST for Santa Cruz 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 10, 2012, 1:27 PM MST (20:27 UTC)
- Expired
- Sep 10, 2012, 3:30 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 35 km from the middle of the area, began a volume at 20:28 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, 8.5 hours before the alert went out and 67 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
- 773 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1076 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
675 WGUS55 KTWC 102027 FFWTWC AZC023-102230- /O.NEW.KTWC.FF.W.0075.120910T2027Z-120910T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 127 PM MST MON SEP 10 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA... * UNTIL 330 PM MST * AT 119 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SONOITA AND PATAGONIA PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...SONOITA CREEK...RED ROCK CANYON...HARSHAW CREEK. 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 3169 11081 3170 11058 3138 11060 3147 11079 $$ GL
4 follow-up statements
727 WGUS75 KTWC 102055 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 155 PM MST MON SEP 10 2012 AZC023-102230- /O.CON.KTWC.FF.W.0075.000000T0000Z-120910T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SANTA CRUZ AZ- 155 PM MST MON SEP 10 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR EASTERN SANTA CRUZ COUNTY... AT 147 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE PATAGONIA MOUNTAINS JUST TO THE SOUTHEAST OF PATAGONIA. DOPPLER RADAR ESTIMATES INDICATE THAT RAINFALL AMOUNTS OF 2 TO 4 INCHES HAVE OCCURRED IN THIS REGION TO THE SOUTHEAST OF PATAGONIA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...SONOITA CREEK...HARSHAW CREEK AND REDROCK CANYON. ADDITIONAL RAINFALL AMOUNTS OF LOCALLY ONE TO TWO INCHES IS POSSIBLE IN THE WARNED AREA. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && LAT...LON 3169 11081 3170 11058 3138 11060 3147 11079 $$ GL
997 WGUS75 KTWC 102114 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 214 PM MST MON SEP 10 2012 AZC023-102230- /O.CON.KTWC.FF.W.0075.000000T0000Z-120910T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SANTA CRUZ AZ- 214 PM MST MON SEP 10 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR EASTERN SANTA CRUZ COUNTY... AT 210 PM MST...A THUNDERSTORM PRODUCING FLASH FLOODING WAS REPORTED OVER SANTA CRUZ COUNTY TO THE SOUTHEAST OF PATAGONIA. A PUBLIC REPORT OF 1.8 INCHES OF RAINFALL IN 45 MINUTES HAS OCCURRED WITH THIS STORM. IN ADDITION...RAINFALL AMOUNTS OF 3 TO 4 INCHES HAVE LOCALLY OCCURRED WITH THIS STORM OVER HARSHAW CREEK AND REDROCK CANYON. THIS VERY HEAVY RAINFALL WILL BE FLOWING DOWNSTREAM INTO SONOITA CREEK JUST UPSTREAM OF PATAGONIA. RESIDENTS OF SHOULD TAKE PROPER PRECAUTIONS FOR THE POTENTIAL OF FLASH FLOODING IN PATAGONIA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PATAGONIA AND SONOITA. 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. 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 3169 11081 3170 11058 3138 11060 3147 11079 $$ GL
175 WGUS75 KTWC 102154 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 254 PM MST MON SEP 10 2012 AZC023-102230- /O.CON.KTWC.FF.W.0075.000000T0000Z-120910T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SANTA CRUZ AZ- 254 PM MST MON SEP 10 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR EASTERN SANTA CRUZ COUNTY... AT 246 PM MST...SANTA CRUZ COUNTY FLOOD CONTROL DISTRICT REPORTED FLASH FLOODING IN HARSHAW CREEK TO THE SOUTHEAST OF PATAGONIA. THIS FLOW WILL CONTINUE TO MOVE DOWNSTREAM TOWARDS PATAGONIA. HOWEVER...IT DOES NOT APPEAR THE FLOW WILL BE STRONG ENOUGH TO RESULT IN FLOODING WITHIN THE TOWN OF PATAGONIA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PATAGONIA AND SONOITA PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && LAT...LON 3169 11081 3170 11058 3138 11060 3147 11079 $$ GL
628 WGUS75 KTWC 102226 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 326 PM MST MON SEP 10 2012 AZC023-102235- /O.EXP.KTWC.FF.W.0075.000000T0000Z-120910T2230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SANTA CRUZ AZ- 326 PM MST MON SEP 10 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 330 PM MST FOR EASTERN SANTA CRUZ COUNTY... HEAVY FLOWS WILL CONTINUE ACROSS REDROCK CANYON...HARSHAW CREEK AND SONOITA CREEK INTO THIS EVENING. HOWEVER...THE THREAT FOR FLASH FLOODING HAS SUBSIDED...THUS THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 3169 11081 3170 11058 3138 11060 3147 11079 $$ GL
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 6:49 PM MST | Areal Flood Warning | TWC | Pima | 18 hr |
| Sep 9, 11:55 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Sep 10, 12:46 PM MST | Areal Flood Warning | TWC | Pima | 30 hr |
| Sep 10, 1:37 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Santa Cruz | 3 hr |
| Sep 10, 2:24 PM MST | Flash Flood Warning | TWC | Cochise | 111 min |
| Sep 10, 2:29 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 10, 2:41 PM MST | Flash Flood Warning | TWC | Pima | 94 min |
| Sep 10, 3:40 PM MST | Areal Flood Advisory | TWC | Cochise, Graham | 80 min |
| Sep 10, 3:44 PM MST | Special Weather Statement | TWC | Pima | 46 min |
| Sep 10, 3:49 PM MST | Special Weather Statement | TWC | Pima | 41 min |
| Sep 10, 3:53 PM MST | Severe Thunderstorm Warning | TWC | Pima | 37 min |
| Sep 10, 3:54 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Sep 10, 4:13 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 2 hr |
| Sep 10, 4:24 PM MST | Severe Thunderstorm Warning | TWC | Pima | 36 min |
| Sep 10, 4:56 PM MST | Areal Flood Advisory | TWC | Graham, Pinal | 112 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.