Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 23, NWS San Angelo, TX

May 4, 1999Menard County, Texas

NWS San Angelo, TX issued this tornado warning at May 4, 1999, 5:08 AM CDT for Menard County, Texas. It was in force for 42 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
May 4, 1999, 5:08 AM CDT (10:08 UTC)
Expired
May 4, 1999, 5:50 AM CDT
In force
42 min
Issued by
NWS San Angelo, TX
Area
Whole counties

County Menard County, TX

The radar

The San Angelo radar (KSJT), 83 km from the middle of the area, began a volume at 10:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 4, 5:00 AM CDTTornado WatchSPC6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 10.1 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 1999-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2685 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 1999-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2685 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1189 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
1.5
Supercell composite
14.3

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.

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 7:06 PM CDTSevere Thunderstorm WarningSJTNolan79 min
May 3, 7:32 PM CDTTornado WarningSJTSterling58 min
May 3, 7:40 PM CDTSevere Thunderstorm WarningSJTMitchell65 min
May 3, 7:44 PM CDTSevere Thunderstorm WarningSJTFisher61 min
May 3, 7:52 PM CDTTornado WarningSJTMitchell, Nolan83 min
May 3, 8:01 PM CDTFlash Flood WarningSJTSterling3 hr
May 3, 8:01 PM CDTSevere Thunderstorm WarningSJTCoke79 min
May 3, 8:19 PM CDTSevere Thunderstorm WarningSJTHaskell26 min
May 3, 8:26 PM CDTSevere Thunderstorm WarningSJTSterling64 min
May 3, 8:39 PM CDTSevere Thunderstorm WarningSJTTaylor66 min
May 3, 8:47 PM CDTTornado WarningSJTTaylor58 min
May 3, 8:51 PM CDTFlash Flood WarningSJTCoke3 hr
May 3, 8:56 PM CDTTornado WarningSJTSterling79 min
May 3, 9:13 PM CDTSevere Thunderstorm WarningSJTCoke62 min
May 3, 9:22 PM CDTSevere Thunderstorm WarningSJTTom Green83 min
May 3, 9:40 PM CDTSevere Thunderstorm WarningSJTTaylor65 min
May 3, 9:42 PM CDTTornado WarningSJTCoke, Tom Green63 min
May 3, 9:52 PM CDTSevere Thunderstorm WarningSJTCallahan68 min
May 3, 10:25 PM CDTSevere Thunderstorm WarningSJTTaylor45 min
May 3, 10:44 PM CDTSevere Thunderstorm WarningSJTCoke, Runnels76 min
May 3, 11:20 PM CDTSevere Thunderstorm WarningSJTTaylor55 min
May 4, 1:51 AM CDTSevere Thunderstorm WarningSJTIrion64 min
May 4, 2:01 AM CDTSevere Thunderstorm WarningSJTSchleicher94 min
May 4, 2:13 AM CDTSevere Thunderstorm WarningSJTTom Green62 min
May 4, 2:22 AM CDTTornado WarningSJTSchleicher78 min
May 4, 3:16 AM CDTFlash Flood WarningSJTSchleicher3 hr
May 4, 3:33 AM CDTTornado WarningSJTSchleicher92 min
May 4, 4:20 AM CDTTornado WarningSJTMenard50 min
May 4, 5:48 AM CDTTornado WarningSJTMason, Menard47 min
May 4, 6:32 AM CDTTornado WarningSJTMason48 min

Nearby

Tornado Warnings in Texas, 1999Every tornado warning in 1999Tornadoes 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.