Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 5, NWS San Angelo, TX

March 7, 1998Tom Green County, Texas

NWS San Angelo, TX issued this tornado warning at Mar 7, 1998, 2:14 PM CST for Tom Green County, Texas. It was in force for 61 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 7, 1998, 2:14 PM CST (20:14 UTC)
Expired: Mar 7, 1998, 3:15 PM CST
In force: 61 min
Issued by: NWS San Angelo, TX
Area: Whole counties

County Tom Green County, TX

The radar

The San Angelo radar (KSJT), 5 km from the middle of the area, began a volume at 20:13 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.

What was reported inside it

Time	Report	Where	Remark
Mar 7, 2:38 PM CST	Hail 0.75	Wall, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 8.2 hours before the alert went out and 175 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: 498 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1012 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSJT 072014 RRA
TORSJT
TXC451-072115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
214 PM CST SAT MAR 7 1998

THE NATIONAL WEATHER SERVICE IN SAN ANGELO TX HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 315 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN WEST CENTRAL TEXAS

   ...TOM GREEN COUNTY

AT 212 PM CST... DOPPLER RADAR AT SAN ANGELO INDICATED A DEVELOPING
TORNADO IN THE VICINITY OF SAN ANGELO MOVING EAST AT 25 MPH.

SOME LOCATIONS IN THE PATH OF THIS TORNADO ARE...SAN ANGELO...
WALL... VERIBEST AND VANCOURT.

IF YOU ARE CAUGHT OUTSIDE... SEEK SAFETY IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT... SEEK REFUGE IN A CULVERT... DITCH OR
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.


08

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.

NWS San Angelo, TX wrote its last area forecast discussion before this tornado warning went out at Mar 7, 1:54 PM CST, 20 minutes earlier.

Area forecast discussion, Mar 7, 1:54 PM CST, 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
154 PM CST SAT MAR 7 1998

WITH SEVERE WEATHER ONGOING...WILL HAVE LITTLE TO ADD TO MODEL
FORECASTS THIS ROUND.  WITH MODELS SHOWING GOOD AGREEMENT THROUGH THE
NEXT COUPLE PERIODS...WILL NOT DEVIATE MUCH FROM GUIDANCES WITH A
SLIGHT EMPHASIS ON THE COOLER AVIATION GUIDANCE. EXPECT DRIZZLE
AND/OR FLURRIES TO BE POSSIBLE TOWARD MORNING OVER THE EASTERN BIG
COUNTRY. EXPECT WIND ADVISORY CRITERIA TOWARD MORNING AND CONTINUING
INTO THE 2ND PERIOD OVER THE FTW ZONES WITH LAKE CAUTION LEVELS
ELSEWHERE.

ABI 031/046 31
SJT 035/051 -0
JCT 036/055 00

15

In the hours before

Special weather statement, Mar 7, 9:48 AM CST, 4 hours 26 minutes before

TXZ098-099-113-114-127-128-071605-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
948 AM CST SAT MAR 7 1998

...THE SEVERE THUNDERSTORM WATCH FOR THE EASTERN BIG COUNTRY HAS
BEEN CANCELLED...

AT 945 AM...SHOWERS AND THUNDERSTORMS HAVE MOVED TO THE EAST OF THE
BIG COUNTRY...ENDING THE THREAT OF SEVERE WEATHER. REDEVELOPMENT OF
THUNDERSTORMS IS NOT LIKELY IN THE EASTERN BIG COUNTRY THIS
MORNING...SO THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED.

10

Special weather statement, Mar 7, 9:48 AM CST, 4 hours 26 minutes before

TXZ098-099-113-114-127-128-071605-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
948 AM CST SAT MAR 7 1998

...THE SEVERE THUNDERSTORM WATCH FOR THE EASTERN BIG COUNTRY HAS
BEEN CANCELLED...

AT 945 AM...SHOWERS AND THUNDERSTORMS HAVE MOVED TO THE EAST OF THE
BIG COUNTRY...ENDING THE THREAT OF SEVERE WEATHER. REDEVELOPMENT OF
THUNDERSTORMS IS NOT LIKELY IN THE EASTERN BIG COUNTRY THIS
MORNING...SO THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED.

10

Local storm report, Mar 7, 12:45 PM CST, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TEXAS
145 PM CDT SAT MAR 07 1998

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0136 PM    VANCOURT                  TX   0.75 INCH HAIL
03/07/98   TOM GREEN                      DIME SIZE HAIL REPORTED
                                          BY SPOTTER

Local storm report, Mar 7, 1:45 PM CST, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TEXAS
145 PM CDT SAT MAR 07 1998

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0136 PM    VANCOURT                  TX   0.75 INCH HAIL
03/07/98   TOM GREEN                      DIME SIZE HAIL REPORTED
                                          BY SPOTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 8:03 PM CST	Severe Thunderstorm Warning	SJT	Crockett	47 min
Mar 6, 9:51 PM CST	Severe Thunderstorm Warning	SJT	Crockett	94 min
Mar 6, 9:57 PM CST	Severe Thunderstorm Warning	SJT	Irion	93 min
Mar 7, 1:00 AM CST	Severe Thunderstorm Warning	SJT	Crockett	35 min
Mar 7, 2:44 AM CST	Severe Thunderstorm Warning	SJT	Nolan	46 min
Mar 7, 3:17 AM CST	Severe Thunderstorm Warning	SJT	Taylor	48 min
Mar 7, 8:46 AM CST	Severe Thunderstorm Warning	SJT	Schleicher, Tom Green	49 min
Mar 7, 12:53 PM CST	Severe Thunderstorm Warning	SJT	Tom Green	47 min
Mar 7, 12:57 PM CST	Severe Thunderstorm Warning	SJT	Crockett	63 min
Mar 7, 1:27 PM CST	Severe Thunderstorm Warning	SJT	Concho	63 min
Mar 7, 1:53 PM CST	Tornado Warning	SJT	Sutton	77 min
Mar 7, 2:24 PM CST	Severe Thunderstorm Warning	SJT	Concho	46 min
Mar 7, 2:42 PM CST	Severe Thunderstorm Warning	SJT	Concho	58 min
Mar 7, 2:51 PM CST	Severe Thunderstorm Warning	SJT	Kimble	74 min
Mar 7, 3:20 PM CST	Severe Thunderstorm Warning	SJT	Coleman, McCulloch	60 min

Nearby

Tornado Warnings in Texas, 1998 Every tornado warning in 1998 Tornadoes in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.