Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 394, NWS Norman, OK

June 19, 1998Garfield County, Grant County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 19, 1998, 6:30 PM CDT for Garfield County, Grant County, Oklahoma. It was in force for 30 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
Jun 19, 1998, 6:30 PM CDT (23:30 UTC)
Expired
Jun 19, 1998, 7:00 PM CDT
In force
30 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Garfield County, OK, Grant County, OK

The radar

The Vance AFB radar (KVNX), 35 km from the middle of the area, began a volume at 23:29 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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 19, 5:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 11.5 hours before the alert went out and 27 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, Lamont, OK at 12:00Z on 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Lamont, OK at 12:00Z on 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
7 J/kg
Mixed-layer CIN
-416 J/kg
Mixed-layer LCL
2260 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
238 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 19, 3:30 PM CDT, 3 hours earlier.

Area forecast discussion, Jun 19, 3:30 PM CDT, 3 hours before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
330 PM CDT FRI JUN 19 1998

CU BUBBLING ACROSS WRN ZONES ATTM.  SUSPECT THAT WEAK BOUNDARIES
STILL LINGER AND WITH ADAS CAPES >= 3000 J/KG ACROSS MUCH OF
FA...CANNOT RULE OUT ISOLATED CONVECTION THIS EVENING.  UPPER RIDGE
TRIES TO BUILD IN OVER THE WEEKEND.  BUT FA REMAINS LARGELY ON THE
EDGE OF THE RIDGE WITH SHORT WAVES MOVING THROUGH RELATIVELY ZONAL
FLOW.  WILL LEAVE LOW POPS THROUGH MONDAY.  BY TUESDAY RIDGE SHOULD
BE STRONG ENOUGH TO INHIBIT CONVECTION.

FCSTID = 10
OKC   74  99  74  94 /  20  20  20  20
HBR   73 101  73  94 /  20  20  20  20
SPS   74 105  73  95 /  20  20  20  20
GAG   70 100  67  93 /  20  20  20  20
PNC   74  99  73  94 /  20  20  20  20
DUA   75  99  74  95 /  20  20  20  20

.OUN...
OK...NONE.
TX...NONE.

In the hours before

Special weather statement, Jun 19, 12:30 PM CDT, 6 hours before
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Special weather statement, Jun 19, 12:30 PM CDT, 6 hours before
<!doctype html>
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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
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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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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jun 19, 6:19 PM CDT, 11 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
619 PM CDT FRI JUN 19 1998

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

0552 PM    1 N ENID                  OK   2.75 INCH HAIL
06/19/98   GARFIELD

TL
Local storm report, Jun 19, 6:19 PM CDT, 11 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
619 PM CDT FRI JUN 19 1998

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

0552 PM    1 N ENID                  OK   2.75 INCH HAIL
06/19/98   GARFIELD

TL

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 7:28 PM CDTSevere Thunderstorm WarningOUNJefferson, Stephens47 min
Jun 18, 7:43 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray47 min
Jun 18, 8:12 PM CDTSevere Thunderstorm WarningOUNJefferson48 min
Jun 18, 8:26 PM CDTSevere Thunderstorm WarningOUNCarter49 min
Jun 18, 8:30 PM CDTFlash Flood WarningOUNCarter, Jefferson2 hr
Jun 18, 8:45 PM CDTSevere Thunderstorm WarningOUNLove45 min
Jun 18, 8:59 PM CDTSevere Thunderstorm WarningOUNJefferson46 min
Jun 18, 9:15 PM CDTSevere Thunderstorm WarningOUNCarter45 min
Jun 18, 9:31 PM CDTSevere Thunderstorm WarningOUNLove44 min
Jun 18, 9:45 PM CDTSevere Thunderstorm WarningOUNJefferson45 min
Jun 18, 9:50 PM CDTFlash Flood WarningOUNLove115 min
Jun 18, 10:14 PM CDTSevere Thunderstorm WarningOUNLove46 min
Jun 18, 10:29 PM CDTSevere Thunderstorm WarningOUNJefferson46 min
Jun 18, 10:30 PM CDTFlash Flood WarningOUNJefferson2 hr
Jun 18, 11:16 PM CDTSevere Thunderstorm WarningOUNStephens44 min
Jun 19, 12:00 AM CDTSevere Thunderstorm WarningOUNStephens45 min
Jun 19, 12:42 AM CDTSevere Thunderstorm WarningOUNStephens48 min
Jun 19, 5:22 PM CDTSevere Thunderstorm WarningOUNGarfield, Grant, Kay, Noble38 min
Jun 19, 5:43 PM CDTSevere Thunderstorm WarningOUNGarfield47 min
Jun 19, 5:52 PM CDTSevere Thunderstorm WarningOUNTillman58 min
Jun 19, 6:15 PM CDTSevere Thunderstorm WarningOUNKay45 min
Jun 19, 6:26 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian49 min
Jun 19, 6:54 PM CDTTornado WarningOUNGarfield36 min
Jun 19, 6:59 PM CDTSevere Thunderstorm WarningOUNComanche31 min
Jun 18, 9:28 PM CDTSevere Thunderstorm WarningOUNClay32 min
Jun 18, 9:57 PM CDTSevere Thunderstorm WarningOUNClay33 min
Jun 19, 5:15 PM CDTSevere Thunderstorm WarningOUNBaylor, Wilbarger45 min
Jun 19, 5:52 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor, Wichita, Wilbarger58 min
Jun 19, 6:19 PM CDTSevere Thunderstorm WarningOUNBaylor41 min
Jun 19, 6:55 PM CDTSevere Thunderstorm WarningOUNBaylor, Wilbarger50 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.