Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 19, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 19, 2017, 9:26 PM MST for Graham County, Arizona. It was in force for 94 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 19, 2017, 9:26 PM MST (04:26 UTC)
- Expired
- Jul 19, 2017, 11:00 PM MST
- In force
- 94 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Graham County, AZ
The radar
The Tucson radar (KEMX), 115 km from the middle of the area, began a volume at 04:28 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 (KDMA), launched 00:00Z, 4.4 hours before the alert went out and 114 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
- 709 J/kg
- Mixed-layer CIN
- -129 J/kg
- Mixed-layer LCL
- 1571 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
683 WGUS55 KTWC 200426 FFWTWC AZC009-200600- /O.NEW.KTWC.FF.W.0019.170720T0426Z-170720T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 926 PM MST WED JUL 19 2017 The National Weather Service in Tucson has issued a * Flash Flood Warning for... South central Graham County in southeastern Arizona... * Until 1100 PM MST * At 924 PM MST, automated gauge reports indicated thunderstorms producing heavy rain across Mount Graham. Over one inch of rain has already fallen on parts of the Frye Wildfire burn scar. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Frye Mesa Dam and Mount Graham. Areas affected include the Frye Fire Burn Scar and locations below it, namely Ash Creek, Frye Creek and Swift Trail Rd (Highway 366). PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3258 10975 3265 11001 3283 10996 3277 10976 $$ French
1 follow-up statement
023 WGUS75 KTWC 200517 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 1017 PM MST WED JUL 19 2017 AZC009-200600- /O.CON.KTWC.FF.W.0019.000000T0000Z-170720T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Graham- 1017 PM MST WED JUL 19 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM MST FOR SOUTH CENTRAL GRAHAM COUNTY... At 1014 PM MST, automated gauge reports indicated thunderstorms had produced 1.5 to 2 inches of rain over the Frye Wildfire burn scar over the last 90 minutes. This rainfall will cause flash flooding. Normally dry washes and low water crossings may be inundated in the following locations... Frye Mesa Dam and Mount Graham. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3258 10975 3265 11001 3283 10996 3277 10976 $$ French
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 5:03 PM MST | Areal Flood Advisory | TWC | Pinal | 117 min |
| Jul 19, 6:15 PM MST | Dust Storm Warning | TWC | Cochise, Graham, Greenlee | 105 min |
| Jul 19, 6:23 PM MST | Special Weather Statement | TWC | Santa Cruz | 52 min |
| Jul 19, 8:21 PM MST | Special Weather Statement | TWC | Graham | 39 min |
| Jul 19, 10:54 PM MST | Areal Flood Advisory | TWC | Graham | 3 hr |
| Jul 20, 1:03 PM MST | Special Weather Statement | TWC | Santa Cruz | 27 min |
| Jul 20, 1:20 PM MST | Special Weather Statement | TWC | Santa Cruz | 25 min |
| Jul 20, 1:38 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Jul 20, 1:54 PM MST | Flash Flood Warning | TWC | Santa Cruz | 2 hr |
| Jul 20, 3:56 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 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.