Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 59, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 9, 2017, 3:10 PM MST for Santa Cruz County, Arizona. It was in force for 2 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
- Aug 9, 2017, 3:10 PM MST (22:10 UTC)
- Expired
- Aug 9, 2017, 5:15 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 65 km from the middle of the area, began a volume at 22:09 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, 10.2 hours before the alert went out and 88 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3012 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
135 WGUS55 KTWC 092210 FFWTWC AZC023-100015- /O.NEW.KTWC.FF.W.0059.170809T2210Z-170810T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 310 PM MST WED AUG 9 2017 The National Weather Service in Tucson has issued a * Flash Flood Warning for... South central Santa Cruz County in southeastern Arizona... * Until 515 PM MST * At 309 PM MST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain over Nogales. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Nogales, Nogales Wash. 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. && LAT...LON 3142 11102 3141 11088 3133 11087 3133 11102 $$ Meyer
2 follow-up statements
806 WGUS75 KTWC 092311 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 411 PM MST WED AUG 9 2017 AZC023-100015- /O.CON.KTWC.FF.W.0059.000000T0000Z-170810T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Cruz- 411 PM MST WED AUG 9 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MST FOR SOUTH CENTRAL SANTA CRUZ COUNTY... At 405 PM MST, only light showers remained in the Nogales vicinity. Earlier heavy rain near and south of Nogales will continue to generate heavy flow in washes and streams, including elevated flow in Nogales Wash. Last hour it peaked at 7.5 feet with the most recent reading at 5.6 feet. Additional flow is likely to feed into the area. Normally dry washes and low water crossings may be inundated in the following locations... Nogales. This includes the following streams and drainages...Sonoita Creek ...Potrero Creek...Nogales Wash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of washes and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. && LAT...LON 3142 11102 3141 11088 3133 11087 3133 11102 $$ Meyer
830 WGUS75 KTWC 100013 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 513 PM MST WED AUG 9 2017 AZC023-100021- /O.EXP.KTWC.FF.W.0059.000000T0000Z-170810T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Cruz- 513 PM MST WED AUG 9 2017 ...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL SANTA CRUZ COUNTY WILL EXPIRE AT 515 PM MST... The heavy rain which prompted the Flash Flood Warning has ended. Flooding is no longer expected to pose an immediate threat. Please continue to heed any remaining road closures, as a Flood Advisory remains in effect for most of the area until 7 pm MST. LAT...LON 3142 11102 3141 11088 3133 11087 3133 11102 $$ French
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 2:02 PM MST | Special Weather Statement | TWC | Santa Cruz | 28 min |
| Aug 9, 2:53 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 37 min |
| Aug 9, 2:59 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 4 hr |
| Aug 9, 3:56 PM MST | Special Weather Statement | TWC | Cochise | 49 min |
| Aug 9, 4:34 PM MST | Areal Flood Advisory | TWC | Cochise | 86 min |
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.