Alert archive / Texas / Flash Flood Warnings in 1994

Flash Flood Warning 20, NWS Houston/Galveston, TX

October 18, 1994Jackson County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Oct 18, 1994, 5:28 AM CDT for Jackson County, Texas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Oct 18, 1994, 5:28 AM CDT (10:28 UTC)
Expired: Oct 18, 1994, 11:30 AM CDT
In force: 6 hr
Issued by: NWS Houston/Galveston, TX
Area: Whole counties

County Jackson County, TX

The radar

The Houston radar (KHGX), 156 km from the middle of the area, began a volume at 10:29 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, 10.5 hours before the alert went out and 155 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: 2656 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 618 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 17, 2:30 PM CDT, 14 hours 58 minutes earlier.

Area forecast discussion, Oct 17, 2:30 PM CDT, 14 hours 58 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 18, 4:30 AM CDT	Flash Flood Warning	HGX	Chambers, Harris, Liberty, Montgomery, Polk, San Jacinto	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Trinity, Walker	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Austin, Colorado, Wharton	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Brazoria, Fort Bend, Waller	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Grimes, Washington	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Galveston	7 hr
Oct 18, 9:42 AM CDT	Tornado Warning	HGX	Jackson	33 min
Oct 18, 11:03 AM CDT	Tornado Warning	HGX	Matagorda	27 min

Nearby

Flash Flood Warnings in Texas, 1994 Every flash flood warning in 1994

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.