Alert archive / Texas / Flash Flood Watches in 2013

Flash Flood Watch 3, NWS Houston/Galveston, TX

October 13, 20139 counties in Texas

NWS Houston/Galveston, TX issued this flash flood watch at Oct 13, 2013, 10:11 AM CDT for 9 counties in Texas. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Oct 13, 2013, 10:11 AM CDT (15:11 UTC)
Expired: Oct 13, 2013, 6:46 PM CDT
In force: 9 hr
Issued by: NWS Houston/Galveston, TX
Flood severity: None

Counties Austin County, TX, Brazoria County, TX, Colorado County, TX, Fort Bend County, TX, Jackson County, TX, Matagorda County, TX, Waller County, TX, Washington County, TX, Wharton County, TX

The radar

The Houston radar (KHGX), 102 km from the middle of the area, began a volume at 15:15 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, 3.2 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 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 13, 6:53 AM CDT, 3 hours 18 minutes earlier.

Area forecast discussion, Oct 13, 6:53 AM CDT, 3 hours 18 minutes before

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Hazardous weather outlook, Oct 13, 3:57 AM CDT, 6 hours 14 minutes before

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In the hours before

Special weather statement, Oct 13, 6:22 AM CDT, 3 hours 49 minutes before

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Local storm report, Oct 13, 9:28 AM CDT, 43 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, 11:23 AM CDT	Flash Flood Warning	HGX	Austin, Colorado, Wharton	3 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 Watches in Texas, 2013 Every 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.