Alert archive / Texas / Flash Flood Watches in 2017
Flash Flood Watch 2, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood watch at Apr 1, 2017, 2:57 PM CDT for 9 counties in Texas. It took effect at Apr 2, 2017, 10:00 AM CDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 1, 2017, 2:57 PM CDT (19:57 UTC)
- In effect from
- Apr 2, 2017, 10:00 AM CDT
- Expired
- Apr 2, 2017, 2:40 PM CDT
- In force
- 5 hr
- Issued by
- NWS Houston/Galveston, TX
- Flood severity
- None
Counties Brazos County, TX, Burleson County, TX, Grimes County, TX, Houston County, TX, Madison County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 158 km from the middle of the area, began a volume at 19:55 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 12:00Z, 8.0 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1614 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 151 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 Houston/Galveston, TX wrote its last area forecast discussion before this flash flood watch went out at Apr 1, 1:15 PM CDT, 1 hour 42 minutes earlier.
Area forecast discussion, Apr 1, 1:15 PM CDT, 1 hour 42 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 |
|---|---|---|---|---|
| Mar 31, 10:20 PM CDT | Small Craft Advisory | HGX | 40 hr | |
| Apr 1, 8:41 AM CDT | Beach Hazards Statement | HGX | Brazoria, Chambers, Galveston, Matagorda | 13 hr |
| Apr 1, 1:44 PM CDT | Flood Watch | HGX | Brazos, Burleson, Grimes, Houston, Madison, Trinity and 1 more | 73 min |
Nearby
Flash Flood Watches in Texas, 2017Every flash flood watch in 2017
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.