Alert archive / Texas / Flash Flood Watches in 2012
Flash Flood Watch 3, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood watch at Sep 28, 2012, 3:36 AM CDT for 16 counties in Texas. It took effect at Sep 28, 2012, 7:00 AM CDT. It was in force for 36 hr.
The area
The counties it named.
The facts
- Issued
- Sep 28, 2012, 3:36 AM CDT (08:36 UTC)
- In effect from
- Sep 28, 2012, 7:00 AM CDT
- Expired
- Sep 29, 2012, 7:00 PM CDT
- In force
- 36 hr
- Issued by
- NWS San Angelo, TX
- Flood severity
- None
Counties Brown County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crockett County, TX, Irion County, TX, Kimble County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Tom Green County, TX
The radar
The San Angelo radar (KSJT), 45 km from the middle of the area, began a volume at 08:38 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
Midland Regional, TX (KMAF), launched 00:00Z, 8.6 hours before the alert went out and 219 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
- 245 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 896 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 74 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 San Angelo, TX wrote its last area forecast discussion before this flash flood watch went out at Sep 28, 12:01 AM CDT, 3 hours 35 minutes earlier.
Area forecast discussion, Sep 28, 12:01 AM CDT, 3 hours 35 minutes before
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</html>The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 10:22 AM CDT | Areal Flood Advisory | SJT | Sterling | 113 min |
| Sep 28, 12:12 PM CDT | Areal Flood Advisory | SJT | Jones, Taylor | 2 hr |
| Sep 28, 1:25 PM CDT | Areal Flood Advisory | SJT | Coke, Sterling | 110 min |
| Sep 28, 4:05 PM CDT | River Flood Warning | SJT | Coke | 63 hr |
| Sep 28, 4:36 PM CDT | Areal Flood Advisory | SJT | Tom Green | 114 min |
Nearby
Flash Flood Watches in Texas, 2012Every flash flood watch in 2012
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.