Alert archive / Texas / Flash Flood Watches in 2016
Flash Flood Watch 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood watch at Aug 20, 2016, 3:31 PM CDT for 7 counties in Texas. It took effect at Aug 20, 2016, 7:00 PM CDT. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- Aug 20, 2016, 3:31 PM CDT (20:31 UTC)
- In effect from
- Aug 20, 2016, 7:00 PM CDT
- Expired
- Aug 21, 2016, 3:04 PM CDT
- In force
- 20 hr
- Issued by
- NWS Houston/Galveston, TX
- Flood severity
- None
Counties Austin County, TX, Brazos County, TX, Burleson County, TX, Colorado County, TX, Grimes County, TX, Madison County, TX, Washington County, TX
The radar
The Ft Hood radar (KGRK), 113 km from the middle of the area, began a volume at 20:35 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
Fort Worth, TX (KFWD), launched 12:00Z, 8.5 hours before the alert went out and 293 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
- 107 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
Nearby
Flash Flood Watches in Texas, 2016Every flash flood watch in 2016
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.