Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 13, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at May 13, 1987, 11:30 PM CDT for Irion County, Tom Green County, Texas. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- May 13, 1987, 11:30 PM CDT (04:30 UTC)
- Expired
- May 14, 1987, 12:30 AM CDT
- In force
- 60 min
- Issued by
- NWS San Angelo, TX
- Area
- Whole counties
Counties Irion County, TX, Tom Green County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 00:00Z, 4.5 hours before the alert went out and 155 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.
- Mixed-layer CAPE
- 273 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 2642 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSJT 140433 SVRSJT TXC451-235-140530- BULLETIN (IMMEDIATE BROADCAST REQUESTED) SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 1130 PM CDT WED MAY 13 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230PM FOR PEOPLE IN THE FOLLOWING COUNTYS IN SOUTHWEST TEXAS...TOM GREEN...IRION AT 1125PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES NORTHEAST OF SAN ANGELO AND 10 NORTHWEST OF MERTZON BOTH STORMS MOVING SLOWLY EAST. NUMEROUS REPORTS OF HAIL AROUND THE SAN ANGELO AREA MARBLE TO GOLFBALL SIZE. THESE STORMS CONTAIN HAIL..DAMAGING WIND..LOTS OF LIGHTNING..HEAVY RAIN AND POSSIBLY FLOODING.
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
Special weather statement, May 13, 5:49 PM CDT, 5 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABILENE TX 545 PM CDT WED MAY 13 1987 AT 540 PM CDT VERY STRONG THUNDERSTORMS WERE OVER NORTHERN FISHER AND SOUTHERN STONEWALL COUNTIES OF THE BIG COUNTRY. OTHER HEAVY THUNDERSTORMS CONTINUED IN NOLAN...MITCHELL...AND SCURRY COUNTIES. MOVEMENT WAS NORTHEAST AROUND 10 MPH. SMALL HAIL...HEAVY RAIN...GUSTY WINDS...AND CLOUD TO GROUND LIGHTNING WERE INDICATED IN THE STRONGER STORMS. DUE TO THE SLOW MOVEMENT OF THESE STORMS FLOODING OF LOW LYING AREAS IS LIKELY. STAY TUNED TO LOCAL RADIO OR TV OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION.
Special weather statement, May 13, 7:16 PM CDT, 4 hours 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABILENE TX 720 PM CDT WED MAY 13 1987 AT 715 PM A VERY STRONG THUNDERSTORM WAS INDICATED BY RADAR IN HASKELL COUNTY NEAR RULE. THIS STORM WAS APPROACHING SEVERE LIMITS. RULE AND HASKELL RESIDENTS SHOULD MOVE TO SAFE SHELTER IF THREATENING WEATHER IS OBSERVED OR A WARNING ISSUED. THIS STORM WAS MOVING NORTHEAST AT NEAR 15 MPH. SCATTERED HEAVY THUNDERSTORMS WERE GRADUALLY DECREASING IN INTENSITYp OVER WESTERN SECTIONS OF THE BIG COUNTRY AREA. STAY TUNED TO LOCAL RADIO OR TV OR NOAA WEATHER RADIO FOR THE LATEST
Special weather statement, May 13, 8:32 PM CDT, 2 hours 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABILENE TX 830 PM CDT WED MAY 13 1987 SCATTERED STRONG THUNDERSTORMS WERE GENERALLY ALONG A LINE FROM NORTHERN HASKELL COUNTY SOUTH ACROSS ABILENE THEN SOUTHWEST ACROSS SOUTHERN NOLAN COUNTY. HEAVIEST STORMS AT 825 PM CDT WERE INDICATED BY RADAR EAST OF ROCHESTER...SOUTHEAST OF HASKELL...AND OVER ABILENE. MOVEMENT WAS EAST AT 12 MPH. HEAVY RAIN...WIND GUSTS TO 45 MPH...SMALL HAIL...AND DANGEROUS LIGHTNING WERE INDICATED. SLOWLY MOVING STORMS WILL CAUSE LOCALIZED FLOODING OF LOW LYING AREAS MOTORISTS SHOULD NOT ATTEMPT TO CROSS FAST MOVING WATER OF UNKNOWN DEPTH. STAY TUNED TO LOCAL RADIO OR TV OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION.
Special weather statement, May 13, 9:45 PM CDT, 1 hour 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABILENE TX 940 PM CDT WED MAY 13 1987 AT 935 PM A LINE OF VERY STRONG THUNDERSTORMS WAS INDICATED BY RADAR FROM NORTHERN SHACKELFORD COUNTY SOUTH ACROSS ALBANY...BAIRD...SOUTHERN ABILENE AND SOUTHWEST INTO SOUTHERN NOLAN COUNTY. THE LINE OF STORMS WAS MOVING EAST AT 12 MPH. HAIL...STRONG GUSTY WINDS...HEAVY RAIN CAUSING FLOODING OF LOW LYING AREAS...AND DANGEROUS CLOUD TO GROUND LIGHTNING WERE INDICATED IN THESE HEAVIER STORMS. BIG COUNTRY RESIDENTS LIVING IN EASTERN SECTIONS OF THE AREA SHOULD BE ON THE ALERT FOR POSSIBLE SEVERE WEATHER THIS EVENING AS STORMS WERE INTENSIFYING. STAY TUNED TO LOCAL RADIO OR TV OR NOAA W!EATHER RADIO FOR THE LATEST WEATHER INFORMATION.
Special weather statement, May 13, 9:46 PM CDT, 1 hour 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO, TX 945 PM CDT WED MAY 13 1987 AT 930PM CDT THUNDERSTORMS WERE DEVELOPING RAPIDLY THROUGHOUT THE CONCHO VALLEY. THESE STORMS COULD PRODUCE HEAVY RAIN...STRONG WINDS HAIL AND FREQUENT LIGHTENING. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 15 MPH. THE BEST PROTECTION FROM THUNDERSTORMS...REMAIN INDOORS AWAY FROM DOORS OR WINDOWS. STAY TUNED TO YOUR LOCAL RADIO...TV STATION OUR NOAA WEATHER RADIO FOR LATEST WEATHER INFORMATION.
Special weather statement, May 13, 10:51 PM CDT, 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABILENE TX 1050 PM CDT WED MAY 13 1987 AT 1045 PM SCATTERED VERY STRONG THUNDERSTORMS PERSISTED OVER THE BIG COUNTRY AREA. STRONGEST STORMS WERE IN A LINE FROM NEAR BAIRD SOUTHWEST TO NEAR TUSCOLA. WITH HAIL INDICATED BETWEEN ABILENE AND BAIRD. MOVEMENT WAS EAST AT 10 MPH. HEAVY THUNDERSTORMS WERE ALSO REDEVELOPING IN NORTHERN AND WESTERN SECTIONS OF THE BIG COUNTRY. SMALL HAIL...STRONG GUSTY WINDS...HEAVY RAIN CAUSING FLOODING OF STREETS AND LOW LYING AREAS...AND DANGEROUS LIGHTNING CONTINUED TO BE IN INDICATED. STORMS SHOULD REMAIN STRONG FOR THE NEXT SEVERAL HOURS. STAY TUNED TO LOCAL RADIO OR TV OR NOAA WEATHER RADIO FOR THE LATNEST WEATHER INFORMATION.
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 10:30 PM CDT | Severe Thunderstorm Warning | SJT | Tom Green | 60 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987
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.