Alert archive / Texas / Flash Flood Warnings in 2013

Flash Flood Warning 20, NWS Houston/Galveston, TX

October 13, 2013Austin County, Colorado County, Wharton County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Oct 13, 2013, 11:23 AM CDT for Austin County, Colorado County, Wharton 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: Oct 13, 2013, 11:23 AM CDT (16:23 UTC)
Expired: Oct 13, 2013, 2:15 PM CDT
In force: 3 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

Counties Austin County, TX, Colorado County, TX, Wharton County, TX

The radar

The Houston radar (KHGX), 123 km from the middle of the area, began a volume at 16:25 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 12:00Z, 4.4 hours before the alert went out and 229 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2328 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 605 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

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 Oct 13, 10:37 AM CDT, 46 minutes earlier.

Area forecast discussion, Oct 13, 10:37 AM CDT, 46 minutes before

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Hazardous weather outlook, Oct 13, 3:57 AM CDT, 7 hours 26 minutes before

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In the hours before

Special weather statement, Oct 13, 6:22 AM CDT, 5 hours 1 minute before

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Local storm report, Oct 13, 9:28 AM CDT, 1 hour 55 minutes before

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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 12, 7:28 PM CDT	Areal Flood Advisory	HGX	Polk, San Jacinto, Trinity, Walker	2 hr
Oct 13, 1:45 AM CDT	Areal Flood Advisory	HGX	Brazos, Madison	2 hr
Oct 13, 2:41 AM CDT	Flash Flood Warning	HGX	Madison	2 hr
Oct 13, 2:50 AM CDT	Special Weather Statement	HGX	Brazos, Grimes	40 min
Oct 13, 2:58 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes	32 min
Oct 13, 3:24 AM CDT	Areal Flood Advisory	HGX	Brazos, Grimes	111 min
Oct 13, 4:45 AM CDT	Flash Flood Warning	HGX	Madison	2 hr
Oct 13, 5:27 AM CDT	Areal Flood Advisory	HGX	Austin, Harris, Waller, Washington	2 hr
Oct 13, 5:55 AM CDT	Flash Flood Warning	HGX	Waller	3 hr
Oct 13, 6:22 AM CDT	Special Weather Statement	HGX	Austin, Waller	38 min
Oct 13, 6:33 AM CDT	Flash Flood Warning	HGX	Austin, Waller	117 min
Oct 13, 7:43 AM CDT	Areal Flood Advisory	HGX	Brazos, Burleson, Grimes, Montgomery, Washington	62 min
Oct 13, 8:33 AM CDT	Flash Flood Warning	HGX	Austin, Colorado, Waller	3 hr
Oct 13, 9:40 AM CDT	Areal Flood Advisory	HGX	Austin, Colorado, Jackson, Waller, Wharton	3 hr
Oct 13, 10:11 AM CDT	Flash Flood Watch	HGX	Austin, Brazoria, Colorado, Fort Bend, Jackson, Matagorda and 3 more	9 hr
Oct 13, 1:45 PM CDT	Areal Flood Advisory	HGX	Brazoria, Jackson, Matagorda, Wharton	2 hr
Oct 13, 2:56 PM CDT	River Flood Warning	HGX	Austin, Fort Bend, Wharton	5 days

Nearby

Flash Flood Warnings in Texas, 2013 Every 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.