Alert archive / Texas / Red Flag Warnings in 2009
Red Flag Warning 10, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this red flag warning at Mar 28, 2009, 4:34 AM CDT for 4 counties in Texas. It took effect at Mar 28, 2009, 11:00 AM CDT. It was in force for 6 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
- Mar 28, 2009, 4:34 AM CDT (09:34 UTC)
- In effect from
- Mar 28, 2009, 11:00 AM CDT
- Expired
- Mar 28, 2009, 5:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Houston/Galveston, TX
Counties Colorado County, TX, Jackson County, TX, Matagorda County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 126 km from the middle of the area, began a volume at 09:31 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
Corpus Christi, TX (KCRP), launched 00:00Z, 9.6 hours before the alert went out and 187 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
- 5953 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this red flag 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 red flag warning went out at Mar 27, 6:44 PM CDT, 9 hours 50 minutes earlier.
Area forecast discussion, Mar 27, 6:44 PM CDT, 9 hours 50 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 28, 1:10 AM CDT | Wind Advisory | HGX | Brazoria, Chambers, Galveston, Jackson, Matagorda | 4 hr |
| Mar 28, 4:11 AM CDT | Small Craft Advisory for Hazardous Seas | HGX | 6 hr | |
| Mar 28, 4:34 AM CDT | Fire Weather Watch | HGX | Jackson, Matagorda | 11 hr |
Nearby
Red Flag Warnings in Texas, 2009Every red flag warning in 2009
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.