Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 12, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 15, 2012, 7:02 PM MST for Pima County, Pinal County, Arizona. It was in force for 118 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 15, 2012, 7:02 PM MST (02:02 UTC)
- Expired
- Jul 15, 2012, 9:00 PM MST
- In force
- 118 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Pima County, AZ, Pinal County, AZ
The radar
The Tucson radar (KEMX), 59 km from the middle of the area, began a volume at 02:02 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 00:00Z, 2.0 hours before the alert went out and 23 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
- 880 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 2268 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
839 WGUS55 KTWC 160202 FFWTWC AZC019-021-160400- /O.NEW.KTWC.FF.W.0012.120716T0202Z-120716T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 702 PM MST SUN JUL 15 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES THE CITIES OF...TUCSON...ORO VALLEY... SOUTHEASTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 900 PM MST * AT 650 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT POCKETS OF HEAVY RAIN CONTINUED ACROSS THE TUCSON METRO ARE. IN ADDITION...RUNOFF FROM VERY HEAVY RAIN EARLIER TODAY CONTINUED INTO WASHES. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE TUCSON METRO AREA. 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. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 3267 11114 3264 11046 3198 11045 3191 11123 $$ KD
1 follow-up statement
605 WGUS75 KTWC 160354 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 854 PM MST SUN JUL 15 2012 AZC019-021-160401- /O.EXP.KTWC.FF.W.0012.000000T0000Z-120716T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ-PINAL AZ- 854 PM MST SUN JUL 15 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 900 PM MST FOR SOUTHEASTERN PINAL AND NORTHEASTERN PIMA COUNTIES... WHILE SOME PONDING OF WATER WILL REMAIN IN LOW SPOTS AND SOME LOW WATER CROSSINGS MAY CONTINUE TO HAVE MINOR FLOWS THROUGH THEM... THE BEST RUNOFF HAD ENDED ACROSS THE WARNED AREA AND THE THREAT OF HEAVY RAIN HAD ALSO ENDED. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. ISOLATED SHOWERS AND THUNDERSTORMS ARE STILL POSSIBLE THE REST OF THE NIGHT HOWEVER. LAT...LON 3267 11114 3264 11046 3198 11045 3191 11123 $$ KD
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 5:00 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 2 hr |
| Jul 15, 6:11 PM MST | Areal Flood Advisory | TWC | Pinal | 67 min |
| Jul 15, 6:13 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 32 min |
| Jul 15, 6:17 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Santa Cruz | 3 hr |
| Jul 15, 6:51 PM MST | Areal Flood Warning | TWC | Pima | 12 hr |
| Jul 15, 7:11 PM MST | Areal Flood Advisory | TWC | Graham, Greenlee, Pinal | 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.