Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Houston/Galveston, TX

July 6, 2018Madison County, Texas

NWS Houston/Galveston, TX issued this special weather statement at Jul 6, 2018, 6:21 PM CDT for Madison County, Texas. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 6, 2018, 6:21 PM CDT (23:21 UTC)
Expired: Jul 6, 2018, 7:00 PM CDT
In force: 39 min
Issued by: NWS Houston/Galveston, TX

County Madison County, TX

The radar

The Ft Hood radar (KGRK), 142 km from the middle of the area, began a volume at 23:20 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.4 hours before the alert went out and 243 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: 1135 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1013 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 6, 3:40 PM CDT, 2 hours 41 minutes earlier.

Area forecast discussion, Jul 6, 3:40 PM CDT, 2 hours 41 minutes before

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Hazardous weather outlook, Jul 6, 6:51 AM CDT, 11 hours 30 minutes before

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In the hours before

Special weather statement, Jul 6, 6:21 PM CDT, 0 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
Jul 5, 7:02 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Galveston, Liberty	43 min
Jul 5, 7:04 PM CDT	Severe Thunderstorm Warning	HGX	Liberty, Polk, San Jacinto	26 min
Jul 5, 7:17 PM CDT	Special Marine Warning	HGX		88 min
Jul 5, 7:18 PM CDT	Special Weather Statement	HGX	Montgomery	42 min
Jul 5, 7:29 PM CDT	Special Weather Statement	HGX	Trinity, Walker	61 min
Jul 5, 7:32 PM CDT	Special Weather Statement	HGX	Liberty, San Jacinto	58 min
Jul 5, 7:33 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Liberty	27 min
Jul 5, 7:49 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Montgomery, San Jacinto	41 min
Jul 5, 7:52 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Houston, Madison, Montgomery, San Jacinto, Trinity and 1 more	38 min
Jul 5, 8:16 PM CDT	Special Weather Statement	HGX	Liberty	44 min
Jul 5, 8:28 PM CDT	Special Weather Statement	HGX	Montgomery	17 min
Jul 5, 9:01 PM CDT	Special Weather Statement	HGX	Harris	44 min
Jul 5, 9:32 PM CDT	Special Weather Statement	HGX	Harris	43 min
Jul 5, 9:47 PM CDT	Special Weather Statement	HGX	Fort Bend	28 min

Nearby

Special Weather Statements in Texas, 2018 Every special weather statement in 2018

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.