Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 257, NWS Norman, OK

June 13, 1997Pushmataha County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 13, 1997, 7:30 PM CDT for Pushmataha County, Oklahoma. It was in force for 45 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 13, 1997, 7:30 PM CDT (00:30 UTC)
Expired: Jun 13, 1997, 8:15 PM CDT
In force: 45 min
Issued by: NWS Norman, OK
Area: Whole counties

County Pushmataha County, OK

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 13, 4:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.5 hours before the alert went out and 250 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: 4844 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1304 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: -6 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

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.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 13, 3:40 PM CDT, 3 hours 50 minutes earlier.

Area forecast discussion, Jun 13, 3:40 PM CDT, 3 hours 50 minutes before

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In the hours before

Local storm report, Jun 13, 2:52 PM CDT, 4 hours 38 minutes before

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Local storm report, Jun 13, 2:52 PM CDT, 4 hours 38 minutes before

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Local storm report, Jun 13, 3:17 PM CDT, 4 hours 13 minutes before

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Special weather statement, Jun 13, 5:49 PM CDT, 1 hour 41 minutes before

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Special weather statement, Jun 13, 5:53 PM CDT, 1 hour 37 minutes before

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Local storm report, Jun 13, 6:52 PM CDT, 38 minutes before

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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; the sounding from the Mesonet's radiosonde archive.