Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 363, NWS Norman, OK

July 15, 1997Coal County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 15, 1997, 3:21 PM CDT for Coal County, Oklahoma. It was in force for 54 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: Jul 15, 1997, 3:21 PM CDT (20:21 UTC)
Expired: Jul 15, 1997, 4:15 PM CDT
In force: 54 min
Issued by: NWS Norman, OK
Area: Whole counties

County Coal County, OK

What was reported inside it

Time	Report	Where	Remark
Jul 15, 3:35 PM CDT	Hail 0.88	Cairo, OK

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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 15, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.4 hours before the alert went out and 123 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: 1353 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 1708 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 Jul 15, 3:19 PM CDT, 2 minutes earlier.

Area forecast discussion, Jul 15, 3:19 PM CDT, 2 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Local storm report, Jul 15, 10:03 AM CDT, 5 hours 18 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1005 AM CDT TUE JUL 15 1997

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

1000 AM    7 N WATONGA               OK   0.88 INCH HAIL.
07/15/97   BLAINE

MCCAMMON

Local storm report, Jul 15, 10:05 AM CDT, 5 hours 16 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1005 AM CDT TUE JUL 15 1997

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

1000 AM    7 N WATONGA               OK   0.88 INCH HAIL.
07/15/97   BLAINE

MCCAMMON

Local storm report, Jul 15, 2:24 PM CDT, 57 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
225 PM CDT TUE JUL 15 1997

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

0215 PM    LAKE LAWTONKA             OK   0.88 INCH HAIL.
07/15/97   COMANCHE

MCCAMMON

Local storm report, Jul 15, 2:25 PM CDT, 56 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
225 PM CDT TUE JUL 15 1997

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

0215 PM    LAKE LAWTONKA             OK   0.88 INCH HAIL.
07/15/97   COMANCHE

MCCAMMON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 5:20 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	40 min
Jul 15, 8:30 AM CDT	Severe Thunderstorm Warning	OUN	Blaine	45 min
Jul 15, 9:52 AM CDT	Severe Thunderstorm Warning	OUN	Blaine	53 min
Jul 15, 10:00 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major	45 min
Jul 15, 11:05 AM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	40 min
Jul 15, 1:51 PM CDT	Severe Thunderstorm Warning	OUN	Pontotoc	39 min
Jul 15, 2:32 PM CDT	Severe Thunderstorm Warning	OUN	Garvin	43 min
Jul 15, 2:39 PM CDT	Severe Thunderstorm Warning	OUN	Johnston	51 min
Jul 15, 2:44 PM CDT	Severe Thunderstorm Warning	OUN	McClain	46 min
Jul 15, 3:01 PM CDT	Severe Thunderstorm Warning	OUN	Marshall	44 min
Jul 15, 3:10 PM CDT	Severe Thunderstorm Warning	OUN	Garvin	50 min
Jul 15, 3:13 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	47 min
Jul 15, 3:43 PM CDT	Severe Thunderstorm Warning	OUN	Marshall	47 min
Jul 15, 3:47 PM CDT	Severe Thunderstorm Warning	OUN	Pontotoc	43 min
Jul 15, 3:56 PM CDT	Severe Thunderstorm Warning	OUN	Carter	49 min
Jul 15, 4:50 PM CDT	Severe Thunderstorm Warning	OUN	Seminole	40 min
Jul 15, 5:34 PM CDT	Severe Thunderstorm Warning	OUN	Clay	41 min
Jul 15, 6:10 PM CDT	Severe Thunderstorm Warning	OUN	Clay	50 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997 Every severe thunderstorm warning in 1997

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.