Alert archive / Arizona / Flash Flood Warnings in 2018
Flash Flood Warning 40, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Oct 3, 2018, 9:16 PM MST for Pima County, Arizona. It was in force for 16 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
- Oct 3, 2018, 9:16 PM MST (04:16 UTC)
- Expired
- Oct 4, 2018, 1:15 PM MST
- In force
- 16 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Phoenix radar (KIWA), 183 km from the middle of the area, began a volume at 04:18 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, 4.3 hours before the alert went out and 161 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
- 596 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1415 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
528 WGUS55 KTWC 040416 FFWTWC AZC019-041215- /O.NEW.KTWC.FF.W.0040.181004T0416Z-181004T1215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 916 PM MST WED OCT 3 2018 The National Weather Service in Tucson has issued a * Flash Flood Warning for... Central Pima County in southeastern Arizona... * Until 515 AM MST Thursday. * At 914 PM MST, the water level behind Menagers Dam remains stable however due to concerns related to the structural integrity of the dam and the potential for it to fail, the Flash Flood Warning will remain effect through tonight. * Some locations that will experience flooding if the dam fails include...Ali Chuk. This includes the following streams and drainages...Ali Chuk Wash... Pia Oik Wash and Siovi Shuatak Wash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away or be swept away if the dam fails. && LAT...LON 3183 11265 3189 11252 3177 11244 $$ Cerniglia
1 follow-up statement
388 WGUS55 KTWC 041210 FFWTWC AZC019-042015- /O.EXT.KTWC.FF.W.0040.000000T0000Z-181004T2015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 510 AM MST THU OCT 4 2018 The National Weather Service in Tucson has extended the * Flash Flood Warning for... Central Pima County in southeastern Arizona... * Until 115 PM MST Thursday. * At 509 AM MST, concerns related to the structural integrity of Menagers Dam and the potential for it to fail remain this morning. Thus the Flash Flood Warning has been extended until early this afternoon. * Some locations that will experience flooding include... Ali Chuk. This includes the following streams and drainages...Ali Chuk Wash... Pia Oik Wash and Siovi Shuatak Wash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away or be swept away. River banks and culverts can become unstable and unsafe. && LAT...LON 3183 11265 3189 11252 3177 11244 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 3:31 AM MST | Areal Flood Warning | TWC | Pima | 6 hr |
| Oct 4, 1:19 PM MST | Flash Flood Warning | TWC | Pima | 24 hr |
Nearby
Flash Flood Warnings in Arizona, 2018Every flash flood warning in 2018
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.