Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 72, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 15, 2011, 3:25 PM MST for Pima County, Arizona. It was in force for 110 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
- Sep 15, 2011, 3:25 PM MST (22:25 UTC)
- Expired
- Sep 15, 2011, 5:15 PM MST
- In force
- 110 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 51 km from the middle of the area, began a volume at 22:28 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, 10.4 hours before the alert went out and 16 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
- 927 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1450 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
096 WGUS55 KTWC 152225 FFWTWC AZC019-160015- /O.NEW.KTWC.FF.W.0072.110915T2225Z-110916T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 325 PM MST THU SEP 15 2011 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES THE CITY OF TUCSON... * UNTIL 515 PM MST * AT 313 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE WARNED AREA. HEAVY RAINFALL AND RUNOFF FROM EARLIER HEAVY RAINS WILL CONTINUE OVER THE TUCSON METRO AREA. RAINFALL AMOUNTS FROM 1.00 TO 3.00 INCHES HAVE BEEN WIDESPREAD OVER THE SOUTHERN PORTION OF THE TUCSON METRO AREA. THE HEAVIEST RAINFALL HAS OCCURRED BETWEEN DAVIS MONTHAN AND SAHUARITA. THUNDERSTORMS WILL CONTINUE TO TRAIN OVER THE AREA THROUGH THE REST OF THE AFTERNOON. THIS IS VERY SERIOUS SITUATION WITH SIGNIFICANT FLASH FLOODING LIKELY. A SIGNIFICANT RISE IN THE SANTA CRUZ RIVER WILL ALSO OCCUR OVER THE NEXT SEVERAL HOURS. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUCSON INTERNATIONAL AIRPORT...SOUTH TUCSON...SEVEN FALLS...SAGUARO NATIONAL PARK WEST...SAGUARO NATIONAL PARK EAST...SABINO CANYON... RYAN FIELD...RITA RANCH...DAVIS-MONTHAN AIR FORCE BASE AND CATALINA FOOTHILLS. 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 3217 11141 3243 11093 3223 11045 3181 11117 $$ SHOEMAKER
1 follow-up statement
175 WGUS75 KTWC 152304 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 404 PM MST THU SEP 15 2011 AZC019-160015- /O.CON.KTWC.FF.W.0072.000000T0000Z-110916T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 404 PM MST THU SEP 15 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MST FOR EASTERN PIMA COUNTY... AT 354 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE WARNED AREA. HEAVY RAINFALL AND RUNOFF FROM EARLIER HEAVY RAINS WILL CONTINUE OVER THE TUCSON METRO AREA. RAINFALL AMOUNTS FROM 1.00 TO 3.00 INCHES HAVE BEEN WIDESPREAD OVER THE SOUTHERN PORTION OF THE TUCSON METRO AREA. THE HEAVIEST RAINFALL HAS OCCURRED BETWEEN DAVIS MONTHAN AND SAHUARITA. THUNDERSTORMS WILL CONTINUE TO TRAIN OVER THE AREA THROUGH THE REST OF THE AFTERNOON. THIS IS VERY SERIOUS SITUATION WITH SIGNIFICANT FLASH FLOODING LIKELY. A SIGNIFICANT RISE IN THE SANTA CRUZ RIVER WILL ALSO OCCUR OVER THE NEXT SEVERAL HOURS. A STAGE OF 10 FEET WAS REPORTED ON THE SANTA CRUZ RIVER AT CONGRESS AT 350 PM. THIS WATER WILL CONTINUE MOVING NORTHWARD DURING NEXT FEW HOURS. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUCSON PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. && LAT...LON 3217 11141 3243 11093 3223 11045 3181 11117 $$ CS
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 5:46 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 44 min |
| Sep 14, 6:23 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 52 min |
| Sep 14, 7:14 PM MST | Special Weather Statement | TWC | 31 min | |
| Sep 15, 3:22 AM MST | Severe Thunderstorm Warning | TWC | Graham | 27 min |
| Sep 15, 12:31 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 29 min |
| Sep 15, 1:08 PM MST | Areal Flood Advisory | TWC | Cochise, Pima | 3 hr |
| Sep 15, 1:18 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
| Sep 15, 1:33 PM MST | Flash Flood Warning | TWC | Pima | 117 min |
| Sep 15, 3:16 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 44 min |
| Sep 15, 3:35 PM MST | Special Weather Statement | TWC | Greenlee | 40 min |
| Sep 15, 3:53 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham, Greenlee | 37 min |
| Sep 15, 4:14 PM MST | Areal Flood Advisory | TWC | Cochise, Graham, Greenlee | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 2011Every flash flood warning in 2011
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.