Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 16, NWS Austin/San Antonio, TX

March 27, 1999Medina County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Mar 27, 1999, 7:06 PM CST for Medina County, Texas. It was in force for 59 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
Mar 27, 1999, 7:06 PM CST (01:06 UTC)
Expired
Mar 27, 1999, 8:05 PM CST
In force
59 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Medina County, TX

The radar

The Austin/San Antonio radar (KEWX), 112 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

Del Rio, TX (KDRT), launched 00:00Z, 1.1 hours before the alert went out and 168 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, Del Rio, TX at 00:00Z on 1999-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Del Rio, TX at 00:00Z on 1999-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -190 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-190 m²/s²
0-3 km storm-relative helicity
-191 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSAT 280106 RRA
TORSAT
TXC325-280205-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
706 PM CST SAT MAR 27 1999

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* TORNADO WARNING FOR...
  MEDINA COUNTY IN TEXAS

* UNTIL 805 PM CST

* AT 705 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO JUST NORTH OF D'HANIS...MOVING NORTHEAST AT 35 MPH.

IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR
ROOM AWAY FROM WINDOWS.

IF YOU ARE CAUGHT OUTSIDE...SEEK SAFETY IN A NEARBY STURDY
BUILDING. AS A LAST RESORT... SEEK REFUGE IN A CULVERT...
DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. BEWARE
THE THREAT OF RISING WATER.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Mar 27, 6:00 PM CST, 1 hour 6 minutes before
TXZ171>173-183>194-202>209-217>225-228-281200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
600 PM CST SAT MAR 27 1999

STRONG THUNDERSTORMS WILL MOVE ACROSS SOUTH CENTRAL TEXAS TONIGHT
WITH THE THREAT OF HEAVY RAIN...DEADLY LIGHTNING...AND STRONG
WINDS.  RAINFALL RATES OF ONE INCH PER HOUR WILL BE WIDESPREAD.
2 INCHES PER HOUR ARE POSSIBLE IN THE STRONGER STORMS.

THE LINE OF THUNDERSTORMS WILL MOVE EAST OF SOUTH CENTRAL TEXAS BY
MORNING. ADDITIONAL SHOWERS ARE EXPECTED ON SUNDAY WITH RAINFALL
AMOUNTS GENERALLY ONE HALF INCH ARE LESS.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECASTS, SHORT TERM FORECAST, WATCHES, WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH
CENTRAL TEXAS, PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM
NWS OFFICES IN MIDLAND, SAN ANGELO, FORT WORTH, HOUSTON/GALVESTON
AND CORPUS CHRISTI.
Special weather statement, Mar 27, 6:00 PM CST, 1 hour 6 minutes before
TXZ171>173-183>194-202>209-217>225-228-281200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
600 PM CST SAT MAR 27 1999

STRONG THUNDERSTORMS WILL MOVE ACROSS SOUTH CENTRAL TEXAS TONIGHT
WITH THE THREAT OF HEAVY RAIN...DEADLY LIGHTNING...AND STRONG
WINDS.  RAINFALL RATES OF ONE INCH PER HOUR WILL BE WIDESPREAD.
2 INCHES PER HOUR ARE POSSIBLE IN THE STRONGER STORMS.

THE LINE OF THUNDERSTORMS WILL MOVE EAST OF SOUTH CENTRAL TEXAS BY
MORNING. ADDITIONAL SHOWERS ARE EXPECTED ON SUNDAY WITH RAINFALL
AMOUNTS GENERALLY ONE HALF INCH ARE LESS.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECASTS, SHORT TERM FORECAST, WATCHES, WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH
CENTRAL TEXAS, PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM
NWS OFFICES IN MIDLAND, SAN ANGELO, FORT WORTH, HOUSTON/GALVESTON
AND CORPUS CHRISTI.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 27, 6:25 PM CSTTornado WarningEWXUvalde, Zavala60 min
Mar 27, 6:55 PM CSTSevere Thunderstorm WarningEWXBandera, Medina65 min
Mar 27, 6:55 PM CSTSevere Thunderstorm WarningEWXFrio65 min
Mar 27, 7:40 PM CSTSevere Thunderstorm WarningEWXAtascosa, Bexar80 min
Mar 27, 7:40 PM CSTSevere Thunderstorm WarningEWXKendall80 min
Mar 27, 8:25 PM CSTSevere Thunderstorm WarningEWXComal, Guadalupe, Wilson80 min
Mar 27, 8:55 PM CSTSevere Thunderstorm WarningEWXHays85 min
Mar 27, 8:55 PM CSTSevere Thunderstorm WarningEWXKarnes, Wilson85 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.