Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 39, NWS Fort Worth, TX

January 29, 1999Anderson County, Henderson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jan 29, 1999, 6:53 PM CST for Anderson County, Henderson County, Texas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 29, 1999, 6:53 PM CST (00:53 UTC)
Expired: Jan 29, 1999, 7:45 PM CST
In force: 52 min
Issued by: NWS Fort Worth, TX
Area: Whole counties

Counties Anderson County, TX, Henderson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 158 km from the middle of the area, began a volume at 00:57 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.9 hours before the alert went out and 322 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: 1341 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.8

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jan 29, 4:28 PM CST, 2 hours 25 minutes before

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Local storm report, Jan 29, 4:45 PM CST, 2 hours 8 minutes before

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Local storm report, Jan 29, 4:49 PM CST, 2 hours 4 minutes before

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Local storm report, Jan 29, 4:53 PM CST, 2 hours before

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Local storm report, Jan 29, 5:23 PM CST, 1 hour 30 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Local storm report, Jan 29, 5:31 PM CST, 1 hour 22 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 29, 6:03 PM CST	Flash Flood Warning	FWD	Hunt, Kaufman	3 hr
Jan 29, 6:45 PM CST	Flash Flood Warning	FWD	Anderson	3 hr
Jan 29, 8:42 PM CST	Severe Thunderstorm Warning	FWD	Collin, Grayson	48 min
Jan 29, 8:52 PM CST	Flash Flood Warning	FWD	Hunt	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every severe thunderstorm warning in 1999

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.