Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 76, NWS Amarillo, TX

September 12, 1987Castro County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Sep 12, 1987, 2:16 AM CDT for Castro County, Texas. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Sep 12, 1987, 2:16 AM CDT (07:16 UTC)
Expired
Sep 12, 1987, 3:15 AM CDT
In force
59 min
Issued by
NWS Amarillo, TX
Area
Whole counties

County Castro 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 7.3 hours before the alert went out and 93 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, Amarillo Airport, TX at 00:00Z on 1987-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1560 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, Amarillo Airport, TX at 00:00Z on 1987-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
1560 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1352 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.7

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.

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, Sep 11, 9:47 PM CDT, 4 hours 29 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
 930 PM CDT FRI SEP 11 1987

...VERY STRONG THUNDERSTORMS DEVELOPING ACROSS THE NORTHEAST PANHANDLE..

AT 9.30 PM CDT PERRYTON POLICE DEPTMENT REPORTED PEA SIZE HAIL SIX
MILES SOUTH OF PERRYTON.

AT 9.30 PM CDT RADAR SHOWED VERY HEAVY THUNDERSTORMS ACROSS THE EASTERN
PORTION OF THE OKLAHOMA AND THE NORTHEAST TEXAS PANHANDLE.

ELSEWHERE SHOWERE AND A FEW STRONG THUNDERSTORMS WERE INDICATED IN
EASTERN NEW MEXICO NEAR CENTERVILLE AND JUST SOUTH OF TUCUMCARI.

MOVEMENT WAS SOUTHEAST AROUND 12 MILES AN HOUR.

DURING THE PASSAGE OF THESE THUNDERSTORMS ONE CAN EXCEPT HEAVY RAINFALL
STRONG GUSTY WIND AND SOME SMALL HAIL.
Special weather statement, Sep 11, 9:48 PM CDT, 4 hours 28 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
 930 PM CDT FRI SEP 11 1987

...VERY STRONG THUNDERSTORMS DEVELOPING ACROSS THE NORTHEAST PANHANDLE..

AT 9.30 PM CDT PERRYTON POLICE DEPARTTMENT REPORTED PEA SIZE HAIL SIX
MILES SOUTH OF PERRYTON.

AT 9.30 PM CDT RADAR SHOWED VERY HEAVY THUNDERSTORMS ACROSS THE EASTERN
PORTION OF THE OKLAHOMA AND THE NORTHEAST TEXAS PANHANDLE.

ELSEWHERE SHOWERE AND A FEW STRONG THUNDERSTORMS WERE INDICATED IN
EASTERN NEW MEXICO NEAR CENTERVILLE AND JUST SOUTH OF TUCUMCARI.

MOVEMENT WAS SOUTHEAST AROUND 12 MILES AN HOUR.

DURING THE PASSAGE OF THESE THUNDERSTORMS ONE CAN EXCEPT HEAVY RAINFALL
STRONG GUSTY WIND AND SOME SMALL HAIL.
Special weather statement, Sep 11, 9:54 PM CDT, 4 hours 22 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
 930 PM CDT FRI SEP 11 1987

...VERY STRONG THUNDERSTORMS DEVELOPING ACROSS THE NORTHEAST PANHANDLE..

AT 9.30 PM CDT PERRYTON POLICE DEPARTTMENT REPORTED PEA SIZE HAIL SIX
MILES SOUTH OF PERRYTON.

AT 9.30 PM CDT RADAR SHOWED VERY HEAVY THUNDERSTORMS ACROSS THE EASTERN
PORTION OF THE OKLAHOMA PANHANDLE AND THE NORTHEAST TEXAS PANHANDLE.

ELSEWHERE SHOWERS AND A FEW STRONG THUNDERSTORMS WERE INDICATED IN
EASTERN NEW MEXICO NEAR CENTERVILLE AND JUST SOUTH OF TUCUMCARI.

MOVEMENT WAS SOUTHEAST AROUND 12 MILES AN HOUR.

DURING THE PASSAGE OF THESE THUNDERSTORMS ONE CAN EXCEPT HEAVY RAINFALL
STRON%G GUSTY WIND AND SOME SMALL HAIL.
Special weather statement, Sep 11, 10:45 PM CDT, 3 hours 31 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
1030 PM CDT FRI SEP 11 1987

...VERY STRONG THUNDERSTORMS CONTINUED ACROSS THE NORTHEAST CORNER OF
TEXAS PANHANDLE AND THE EASTERN HAFL OF THE OKLAHOMA PANHANDLE.

AT 10.05 PM CDT SPERMAN POLICE DEPARTTMENT REPORTED PEA SIZE HAIL IN
THE CITY. AND AT 10.00 GUYMON RADIO STATION REPORTED VERY HEAVY RAIN
AND SMALL HAIL ABOUT TWO MILES NORTH OF GUYMON.

AT 10.30 PM CDT RADAR SHOWED VERY HEAVY THUNDERSTORMS ACROSS THE NORTHERN
TEXAS PANHANDLE AND THE EASTERN OKLAHOMA PANHANDLE. A FEW SHOWERS
WERE NOTED IN EASTERN NEW MEXICO AROUND TUCUMCARI.

MOVEMENT WAS SOUTHEAST AROUND 10 MILES AN HOUR.

PERSON IN WTHE PATH OF THESE THUNDERSTORMS CAN EXCEPT BRIEF PERIODS OF
HEAVY RAINFALL..STRONG GUSTY WINDS AND SOME SMALL HAIL.
Special weather statement, Sep 11, 11:47 PM CDT, 2 hours 29 minutes before
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Special weather statement, Sep 12, 12:52 AM CDT, 1 hour 24 minutes before
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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 10:56 PM CDTTornado WarningAMAHansford64 min
Sep 12, 1:24 AM CDTSevere Thunderstorm WarningAMAArmstrong, Briscoe, Donley66 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.