Alert archive / Texas / Flash Flood Watches in 2011
Flash Flood Watch 1, NWS Amarillo, TX
NWS Amarillo, TX issued this flash flood watch at Oct 7, 2011, 3:08 PM CDT for 16 counties in Texas; Beaver County, Texas County, Oklahoma. It took effect at Oct 7, 2011, 10:00 PM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Oct 7, 2011, 3:08 PM CDT (20:08 UTC)
- In effect from
- Oct 7, 2011, 10:00 PM CDT
- Expired
- Oct 8, 2011, 6:21 AM CDT
- In force
- 8 hr
- Issued by
- NWS Amarillo, TX
- Flood severity
- None
Counties Beaver County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Collingsworth County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 81 km from the middle of the area, began a volume at 20:13 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
Dodge City, (KDDC), launched 12:00Z, 8.1 hours before the alert went out and 248 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
- 1174 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 700 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 273 m²/s²
- 0-3 km storm-relative helicity
- 385 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 8.4
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 Amarillo, TX wrote its last area forecast discussion before this flash flood watch went out at Oct 7, 12:11 PM CDT, 2 hours 57 minutes earlier.
Area forecast discussion, Oct 7, 12:11 PM CDT, 2 hours 57 minutes before
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</html>Hazardous weather outlook, Oct 7, 4:23 AM CDT, 10 hours 45 minutes before
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</html>Nearby
Flash Flood Watches in Texas, 2011Flash Flood Watches in Oklahoma, 2011Every flash flood watch in 2011
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.