Alert archive / Texas / Flash Flood Warnings in 2013
Flash Flood Warning 14, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Sep 29, 2013, 6:58 AM CDT for Grimes County, Waller County, Washington County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 29, 2013, 6:58 AM CDT (11:58 UTC)
- Expired
- Sep 29, 2013, 10:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Grimes County, TX, Waller County, TX, Washington County, TX
The radar
The Ft Hood radar (KGRK), 131 km from the middle of the area, began a volume at 11:58 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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 12.0 hours before the alert went out and 282 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
- 424 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 948 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.6
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 29, 4:13 AM CDT, 2 hours 45 minutes earlier.
Area forecast discussion, Sep 29, 4:13 AM CDT, 2 hours 45 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 8:06 PM CDT | Areal Flood Advisory | HGX | Grimes, Waller, Washington | 114 min |
| Sep 28, 8:50 PM CDT | Flash Flood Warning | HGX | Waller, Washington | 3 hr |
| Sep 29, 1:33 AM CDT | Areal Flood Advisory | HGX | Grimes, Madison | 117 min |
| Sep 29, 2:57 AM CDT | Areal Flood Advisory | HGX | Brazos, Grimes | 2 hr |
| Sep 29, 6:33 AM CDT | Areal Flood Advisory | HGX | Grimes, Waller, Washington | 117 min |
| Sep 29, 9:18 AM CDT | River Flood Warning | HGX | Burleson, Lee | 56 hr |
| Sep 29, 9:33 AM CDT | Areal Flood Advisory | HGX | Polk, San Jacinto, Walker | 3 hr |
Nearby
Flash Flood Warnings in Texas, 2013Every flash flood warning in 2013
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.