Alert archive / Texas / Flash Flood Watches in 2013
Flash Flood Watch 4, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood watch at Oct 30, 2013, 2:39 PM CDT for 23 counties in Texas. It took effect at Oct 30, 2013, 7:00 PM CDT. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Oct 30, 2013, 2:39 PM CDT (19:39 UTC)
- In effect from
- Oct 30, 2013, 7:00 PM CDT
- Expired
- Oct 31, 2013, 4:00 PM CDT
- In force
- 21 hr
- Issued by
- NWS Houston/Galveston, TX
- Flood severity
- None
All 23 counties
Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Harris County, TX, Houston County, TX, Jackson County, TX, Liberty County, TX, Madison County, TX, Matagorda County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 91 km from the middle of the area, began a volume at 19:39 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, 7.7 hours before the alert went out and 242 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
- 44 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 668 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 54 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 Oct 30, 1:11 PM CDT, 1 hour 28 minutes earlier.
Area forecast discussion, Oct 30, 1:11 PM CDT, 1 hour 28 minutes before
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</html>Hazardous weather outlook, Oct 30, 5:03 AM CDT, 9 hours 36 minutes before
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Special weather statement, Oct 30, 11:38 AM CDT, 3 hours 1 minute before
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Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 3:53 AM CDT | Small Craft Advisory | HGX | 45 hr | |
| Oct 30, 11:38 AM CDT | Special Weather Statement | HGX | San Jacinto | 37 min |
| Oct 30, 12:17 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto | 28 min |
| Oct 30, 4:26 PM CDT | Special Weather Statement | HGX | Liberty | 49 min |
| Oct 30, 4:54 PM CDT | Areal Flood Advisory | HGX | Liberty | 111 min |
Nearby
Flash Flood Watches in Texas, 2013Every flash flood watch 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.