Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 27, NWS San Angelo, TX

May 9, 1999Brown County, Texas

NWS San Angelo, TX issued this tornado warning at May 9, 1999, 11:05 PM CDT for Brown County, Texas. It was in force for 65 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 9, 1999, 11:05 PM CDT (04:05 UTC)
Expired
May 10, 1999, 12:10 AM CDT
In force
65 min
Issued by
NWS San Angelo, TX
Area
Whole counties

County Brown County, TX

The watch it was issued in

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

IssuedProductOfficeLasted
May 9, 10:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.1 hours before the alert went out and 199 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 1999-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2605 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 1999-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.193958Sfc1 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
2605 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1141 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.8
Supercell composite
9.6

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 9, 8:44 PM CDTSevere Thunderstorm WarningSJTCrockett61 min
May 9, 9:21 PM CDTSevere Thunderstorm WarningSJTConcho, Tom Green64 min
May 9, 9:43 PM CDTSevere Thunderstorm WarningSJTBrown62 min
May 9, 10:23 PM CDTSevere Thunderstorm WarningSJTColeman47 min
May 9, 10:42 PM CDTSevere Thunderstorm WarningSJTBrown63 min
May 9, 10:53 PM CDTFlash Flood WarningSJTBrown3 hr
May 9, 11:33 PM CDTSevere Thunderstorm WarningSJTMcCulloch47 min
May 9, 11:48 PM CDTSevere Thunderstorm WarningSJTSan Saba62 min
May 10, 12:54 AM CDTSevere Thunderstorm WarningSJTSan Saba31 min
May 10, 5:56 AM CDTSevere Thunderstorm WarningSJTRunnels49 min
May 10, 7:48 AM CDTSevere Thunderstorm WarningSJTColeman47 min
May 10, 9:08 AM CDTSevere Thunderstorm WarningSJTBrown62 min
May 10, 5:10 PM CDTSevere Thunderstorm WarningSJTShackelford65 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.