Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 43, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 16, 2011, 3:53 PM MST for Pima County, Arizona. It was in force for 82 min. 5 reports 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
- Aug 16, 2011, 3:53 PM MST (22:53 UTC)
- Expired
- Aug 16, 2011, 5:15 PM MST
- In force
- 82 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 75 km from the middle of the area, began a volume at 22:54 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 |
|---|---|---|---|
| Aug 16, 4:15 PM MST | FLASH FLOOD | 5 E Marana, AZ | WATER FLOWING ACROSS SEVERAL AREAS ON CAMINO DE MANANA. |
| Aug 16, 4:15 PM MST | FLASH FLOOD | 5 E Marana, AZ | WATER FLOWING OVER TANGERINE RD IN SEVERAL PLACES BETWEEN THORNYDALE RD AND INTERSTATE 10. |
| Aug 16, 4:15 PM MST | FLASH FLOOD | 6 W Oro Valley, AZ | CAMINO DE OESTE IMPASSABLE NORTH OF LINDA VISTA BLVD. |
| Aug 16, 4:20 PM MST | HEAVY RAIN 1.05 | 1 Se Dove Mountain, AZ | |
| Aug 16, 4:20 PM MST | HEAVY RAIN 1.52 | 2 Se Dove Mountain, AZ |
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, 10.9 hours before the alert went out and 35 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
- 269 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1299 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
567 WGUS55 KTWC 162253 FFWTWC AZC019-170015- /O.NEW.KTWC.FF.W.0043.110816T2253Z-110817T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 353 PM MST TUE AUG 16 2011 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...DOVE MOUNTAIN * UNTIL 515 PM MST * AT 345 PM MST...RADAR INDICATED A STRONG STORM CAPABLE OF PRODUCING FLASH FLOODING IN THE DOVE MOUNTAIN AREA OF NORTHEAST PIMA COUNTY. THIS STORM WAS SLOWLY DRIFTING TO THE SOUTH AT LESS THAN 5 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOVE MOUNTAIN 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. && LAT...LON 3240 11115 3250 11115 3250 11100 3239 11101 $$
2 follow-up statements
478 WGUS75 KTWC 162307 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 407 PM MST TUE AUG 16 2011 AZC019-170015- /O.CON.KTWC.FF.W.0043.000000T0000Z-110817T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 407 PM MST TUE AUG 16 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MST FOR NORTHEASTERN PIMA COUNTY...INCLUDING DOVE MOUNTAIN... AT 403 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER DOVE MOUNTAIN...SKYRANCH...AND NORTHERN TORTOLITA AREAS. MOVEMENT OF THE STORM WAS SLOWLY TOWARD THE SOUTH AT LESS THAN 5 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. && LAT...LON 3240 11115 3250 11115 3250 11100 3239 11101 $$
857 WGUS75 KTWC 170021 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 521 PM MST TUE AUG 16 2011 AZC019-170027- /O.EXP.KTWC.FF.W.0043.000000T0000Z-110817T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 521 PM MST TUE AUG 16 2011 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTHEASTERN PIMA COUNTY... AT 515 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED THE THUNDERSTORMS OVER DOVE MOUNTAIN HAD DIMINISHED. THEREFORE...THE FLASH FLOOD WARNING FOR THE DOVE MOUNTAIN AREA HAS BEEN ALLOWED TO EXPIRE. HOWEVER...A FLASH FLOOD WARNING STILL CONTINUES IN EFFECT FOR NORTHWEST TUCSON AND MARANA UNTIL 6 PM MST. LAT...LON 3240 11115 3250 11115 3250 11100 3239 11101 $$ ZELL
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 9:39 PM MST | Special Weather Statement | TWC | Pima | 36 min |
| Aug 15, 9:56 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 15, 9:59 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Aug 15, 10:42 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Aug 15, 11:28 PM MST | Severe Thunderstorm Warning | TWC | Pima | 62 min |
| Aug 15, 11:39 PM MST | Areal Flood Advisory | TWC | Pima | 81 min |
| Aug 16, 3:11 PM MST | Areal Flood Advisory | TWC | Pima, Santa Cruz | 2 hr |
| Aug 16, 4:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Aug 16, 4:28 PM MST | Flash Flood Warning | TWC | Pima | 92 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.