Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 313, NWS Tulsa, OK

July 7, 1994Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 7, 1994, 11:08 PM CDT for Ottawa County, Oklahoma. It was in force for 52 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1994, 11:08 PM CDT (04:08 UTC)
Expired: Jul 8, 1994, 12:00 AM CDT
In force: 52 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Ottawa County, OK

The radar

The Tulsa radar (KINX), 100 km from the middle of the area, began a volume at 04:08 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 nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 4.1 hours before the alert went out and 90 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: 2119 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 849 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 301 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 13.5

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 7, 8:53 PM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, Jul 7, 8:53 PM CDT, 2 hours 15 minutes before

AREA FORECAST DISCUSSION FOR EASTERN OKLAHOMA
NATIONAL WEATHER SERVICE TULSA OK
845 PM CDT THU JUL 7 1994

ALTHO MOST OF EOK WAS CAPPED THIS EVE...AMS RMNS VERY UNSTBL AND
SVR TSTMS PRBL IF CAP CAN BE OVRCOME.  SATL PICS INDCT VORT MAX
TRACKING ACRS NWRN KS IN GOOD AGRMNT WITH NGM.  HWVR..00Z UA ANALYS
INDCTS H7 COLD POOL XTNDG SWD WITH DDC COOLING FM +15 TO +6 DURG THE
PAST 12 HRS.  COLD POOL SHUD UNDO CAP OVR NERN OK AND XPCT TSTMS TO
BCM MORE NUFMEROUS OVRNGT.  XPCT ACTVTY TO FOCUS ALG OR JUST NORTH OF
A BNDRY WHICH XTNDS FM BVO-OUN ARND 01Z.  AFTN FCST LOOKS ON TRACK
AND WL MAKE ONLY MINOR CHGS ON THIS UPDATE.

..11..

.TUL...NONE.

In the hours before

Local storm report, Jul 7, 9:45 PM CDT, 1 hour 23 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>

Local storm report, Jul 7, 10:49 PM CDT, 19 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:11 PM CDT	Severe Thunderstorm Warning	TSA	Osage	49 min
Jul 7, 8:25 PM CDT	Tornado Warning	TSA	Osage	50 min
Jul 7, 9:10 PM CDT	Tornado Warning	TSA	Osage, Washington	50 min
Jul 7, 9:51 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers	54 min
Jul 7, 10:11 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	49 min
Jul 7, 10:30 PM CDT	Severe Thunderstorm Warning	TSA	Craig	30 min
Jul 7, 10:41 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers	49 min
Jul 7, 10:58 PM CDT	Severe Thunderstorm Warning	TSA	Craig	32 min
Jul 7, 11:03 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa	42 min
Jul 7, 11:36 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	54 min
Jul 7, 11:44 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	46 min
Jul 8, 12:00 AM CDT	Severe Thunderstorm Warning	TSA	Ottawa	30 min
Jul 8, 12:14 AM CDT	Severe Thunderstorm Warning	TSA	Tulsa, Wagoner	61 min
Jul 8, 1:33 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Wagoner	57 min
Jul 8, 2:09 AM CDT	Severe Thunderstorm Warning	TSA	Adair	51 min
Jul 8, 12:03 AM CDT	Severe Thunderstorm Warning	TSA	Benton	57 min
Jul 8, 12:58 AM CDT	Severe Thunderstorm Warning	TSA	Benton	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1994 Every severe thunderstorm warning in 1994

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.