Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 37, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 28, 2017, 3:26 PM MST for Pima 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
- Jul 28, 2017, 3:26 PM MST (22:26 UTC)
- Expired
- Jul 28, 2017, 6:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 43 km from the middle of the area, began a volume at 22:27 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, 10.4 hours before the alert went out and 7 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
- 207 J/kg
- Mixed-layer CIN
- -228 J/kg
- Mixed-layer LCL
- 1189 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
478 WGUS55 KTWC 282226 FFWTWC AZC019-290130- /O.NEW.KTWC.FF.W.0037.170728T2226Z-170729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 326 PM MST FRI JUL 28 2017 The National Weather Service in Tucson has issued a * Flash Flood Warning for... East central Pima County in southeastern Arizona... * Until 630 PM MST * At 325 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the eastern and northeast portions of Tucson. Thunderstorms with heavy rain are also just starting elsewhere across the city of Tucson. Up to 1.5 inches of rain has already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Tucson, Flowing Wells, Littletown, Drexel Heights, Drexel-Alvernon, Tanque Verde, Valencia West, Casas Adobes, Tucson Estates, South Tucson, Davis-Monthan Air Force Base, San Xavier Mission, Catalina Foothills and Tucson International Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. && LAT...LON 3233 11071 3212 11076 3207 11111 3230 11103 $$ GL
3 follow-up statements
394 WGUS75 KTWC 282304 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 404 PM MST FRI JUL 28 2017 AZC019-290130- /O.CON.KTWC.FF.W.0037.000000T0000Z-170729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima- 404 PM MST FRI JUL 28 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR EAST CENTRAL PIMA COUNTY... At 403 PM MST, gauge reports indicated thunderstorms were producing heavy rain over the warned area. An automated gauge on Country Club Road south of Broadway recorded 1.22 inches in 30 minutes. Flash flooding is expected to begin shortly. Normally dry washes and low water crossings may be inundated in the following locations... Tucson, Flowing Wells, Littletown, Drexel Heights, Drexel-Alvernon, Tanque Verde, Valencia West, Casas Adobes, Tucson Estates, South Tucson, Davis-Monthan Air Force Base, San Xavier Mission, Catalina Foothills and Tucson International Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. && LAT...LON 3233 11071 3212 11076 3207 11111 3230 11103 $$ GL
940 WGUS75 KTWC 282346 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 446 PM MST FRI JUL 28 2017 AZC019-290130- /O.CON.KTWC.FF.W.0037.000000T0000Z-170729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima- 446 PM MST FRI JUL 28 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR EAST CENTRAL PIMA COUNTY... At 444 PM MST, gauge reports indicated thunderstorms were producing heavy rain over the warned area. A rain gauge near Kino Stadium had 2.52". Flash flooding is expected to begin shortly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. && LAT...LON 3233 11071 3212 11076 3207 11111 3230 11103 $$ GL
241 WGUS75 KTWC 290121 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 621 PM MST FRI JUL 28 2017 AZC019-290130- /O.EXP.KTWC.FF.W.0037.000000T0000Z-170729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima- 621 PM MST FRI JUL 28 2017 ...THE FLASH FLOOD WARNING FOR EAST CENTRAL PIMA COUNTY WILL EXPIRE AT 630 PM MST... The heavy rain has ended. Flood waters have receded. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3233 11071 3212 11076 3207 11111 3230 11103 $$ GL
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 5:10 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 35 min |
| Jul 27, 6:50 PM MST | Areal Flood Advisory | TWC | Cochise | 115 min |
| Jul 27, 7:00 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Jul 27, 9:15 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Jul 27, 11:22 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 3 hr |
| Jul 28, 1:30 PM MST | Areal Flood Advisory | TWC | Pima, Santa Cruz | 3 hr |
| Jul 28, 1:37 PM MST | Areal Flood Advisory | TWC | Pima | 113 min |
| Jul 28, 2:18 PM MST | Special Weather Statement | TWC | Santa Cruz | 42 min |
| Jul 28, 2:55 PM MST | Special Weather Statement | TWC | 35 min | |
| Jul 28, 3:08 PM MST | Areal Flood Advisory | TWC | Pima | 112 min |
| Jul 28, 3:09 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 111 min |
| Jul 28, 3:16 PM MST | Severe Thunderstorm Warning | TWC | Pima | 29 min |
| Jul 28, 3:39 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
| Jul 28, 4:49 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
Nearby
Flash Flood Warnings in Arizona, 2017Every flash flood warning in 2017
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.