Alert archive / Arizona / Flash Flood Watches in 2019
Flash Flood Watch 3, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood watch at Aug 9, 2019, 2:09 PM MST for 6 counties in Arizona. It took effect at Aug 10, 2019, 1:00 AM MST. It was in force for 28 hr.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2019, 2:09 PM MST (21:09 UTC)
- In effect from
- Aug 10, 2019, 1:00 AM MST
- Expired
- Aug 11, 2019, 5:00 AM MST
- In force
- 28 hr
- Issued by
- NWS Tucson, AZ
- Flood severity
- None
Counties Cochise County, AZ, Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 61 km from the middle of the area, began a volume at 21:12 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 (KTUS), launched 12:00Z, 9.2 hours before the alert went out and 49 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
- 686 J/kg
- Mixed-layer CIN
- -141 J/kg
- Mixed-layer LCL
- 1718 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tucson, AZ wrote its last area forecast discussion before this flash flood watch went out at Aug 9, 9:39 AM MST, 4 hours 30 minutes earlier.
Area forecast discussion, Aug 9, 9:39 AM MST, 4 hours 30 minutes before
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</html>The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 2:09 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Aug 9, 3:21 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Aug 9, 3:57 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Aug 9, 4:06 PM MST | Special Weather Statement | TWC | Cochise | 39 min |
| Aug 9, 4:17 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
Nearby
Flash Flood Watches in Arizona, 2019Every flash flood watch in 2019
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.