Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 30, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 17, 2012, 10:23 AM MST for Santa Cruz 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
- Aug 17, 2012, 10:23 AM MST (17:23 UTC)
- Expired
- Aug 17, 2012, 1:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 62 km from the middle of the area, began a volume at 17:25 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 (KDMA), launched 12:00Z, 5.4 hours before the alert went out and 83 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
- 560 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
382 WGUS55 KTWC 171723 FFWTWC AZC023-172015- /O.NEW.KTWC.FF.W.0030.120817T1723Z-120817T2015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1023 AM MST FRI AUG 17 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA... THIS INCLUDES THE CITY OF NOGALES... * UNTIL 115 PM MST * AT 1010 AM MST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING IN NOGALES. SEVERAL STREETS ARE CLOSED TO DUE TO HEAVY RAIN AND FLOODING AND MORE RAIN IS EXPECTED THIS MORNING. HEAVY RAIN IN SONORA THIS MORNING WILL CAUSE ADDITIONAL SIGNIFICANT RISES IN NOGALES WASH WHICH WILL OVERTOP ITS BANKS AND CREATE ADDITIONAL FLOODING OF STREETS...HOMES AND WASHES IN NOGALES. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NOGALES. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. IF YOU ENCOUNTER RAPIDLY FLOWING WATER..TURN AROUND DONT DROWN. && LAT...LON 3147 11107 3151 11087 3133 11080 3133 11108 $$ KD
1 follow-up statement
971 WGUS75 KTWC 172000 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 100 PM MST FRI AUG 17 2012 AZC023-172008- /O.CAN.KTWC.FF.W.0030.000000T0000Z-120817T2015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SANTA CRUZ AZ- 100 PM MST FRI AUG 17 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL SANTA CRUZ COUNTY... HEAVY RAIN HAS ENDED IN THE NOGALES AREA AND FLOOD CONTROL OFFICIALS STATED THAT STREET FLOODING HAD SUBSIDED AND WASH LEVELS WERE CONTINUING TO DROP. A RAIN GAUGE IN NOGALES MEASURED 4.02 INCHES OF RAIN THIS MORNING. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MUCH OF SOUTHEAST ARIZONA UNTIL 8 PM MST AS ADDITIONAL RAINFALL IS POSSIBLE THIS AFTERNOON. LAT...LON 3147 11107 3151 11087 3133 11080 3133 11108 $$ KD
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 10:01 PM MST | Areal Flood Advisory | TWC | Graham | 119 min |
| Aug 17, 10:28 AM MST | Flash Flood Watch | TWC | Cochise, Graham, Pima, Pinal, Santa Cruz | 6 hr |
| Aug 17, 11:02 AM MST | Flash Flood Warning | TWC | Pima, Pinal | 118 min |
| Aug 17, 12:26 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Aug 17, 12:39 PM MST | Flash Flood Warning | TWC | Pima | 117 min |
| Aug 17, 1:00 PM MST | Flash Flood Warning | TWC | Cochise | 2 hr |
| Aug 17, 1:20 PM MST | Areal Flood Advisory | TWC | Pinal | 3 hr |
| Aug 17, 2:05 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 115 min |
| Aug 17, 2:36 PM MST | Areal Flood Advisory | TWC | Pima | 3 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.