Alert archive / Oklahoma / Tornado Warnings in 1993

Tornado Warning 48, NWS Norman, OK

May 8, 1993Johnston County, Oklahoma

NWS Norman, OK issued this tornado warning at May 8, 1993, 8:35 PM CDT for Johnston County, Oklahoma. It was in force for 40 min.

The area

The counties it named.

The facts

Issued: May 8, 1993, 8:35 PM CDT (01:35 UTC)
Expired: May 8, 1993, 9:15 PM CDT
In force: 40 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Johnston County, OK

The radar

The Norman radar (KTLX), 126 km from the middle of the area, began a volume at 01:37 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

Norman, OK (KOUN), launched 00:00Z, 1.6 hours before the alert went out and 121 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: 6 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 tornado 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 tornado warning went out at May 8, 4:35 PM CDT, 4 hours earlier.

Area forecast discussion, May 8, 4:35 PM CDT, 4 hours before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
430 PM CDT SAT MAY 8 1993

VRY ACTV SVR WX THIS AFTN PRECLUDING MUCH FCST DISC. WL CONT WITH FFA
FOR MOST OF FCST AREA XPCT FOR NWRN OK. SVR WX AND MAJOR HVY RN PRBLMS
TO PERSIST INTO EVE.

32

.OK...FFA ZNS 6>21 TNGT
.TX...FFA TNGT ZNS 76 77

In the hours before

Local storm report, May 8, 7:29 PM CDT, 1 hour 6 minutes before

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Local storm report, May 8, 7:30 PM CDT, 1 hour 5 minutes before

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Local storm report, May 8, 7:39 PM CDT, 56 minutes before

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Local storm report, May 8, 7:40 PM CDT, 55 minutes before

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Local storm report, May 8, 8:30 PM CDT, 5 minutes before

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Local storm report, May 8, 8:33 PM CDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:05 PM CDT	Severe Thunderstorm Warning	OUN	Love	40 min
May 8, 7:22 PM CDT	Tornado Warning	OUN	Carter	68 min
May 8, 7:26 PM CDT	Severe Thunderstorm Warning	OUN	Woods	49 min
May 8, 7:29 PM CDT	Tornado Warning	OUN	Murray	46 min
May 8, 7:40 PM CDT	Flash Flood Warning	OUN	Carter	3 hr
May 8, 8:23 PM CDT	Tornado Warning	OUN	Carter	37 min
May 8, 8:28 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Johnston, Pontotoc	62 min
May 8, 9:43 PM CDT	Severe Thunderstorm Warning	OUN	Love	47 min
May 8, 10:05 PM CDT	Severe Thunderstorm Warning	OUN	Marshall	40 min
May 9, 12:22 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	53 min
May 9, 12:51 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Kiowa, Washita	39 min
May 9, 12:51 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	39 min
May 9, 3:00 AM CDT	Flash Flood Warning	OUN	Blaine, Kingfisher	3 hr
May 9, 3:22 AM CDT	Flash Flood Warning	OUN	Logan	3 hr
May 9, 5:24 AM CDT	Flash Flood Warning	OUN	Payne	111 min
May 9, 7:25 AM CDT	Flash Flood Warning	OUN	Carter, Coal, Johnston, Marshall, Pontotoc	3 hr
May 9, 7:25 AM CDT	Flash Flood Warning	OUN	Love	3 hr
May 9, 9:46 AM CDT	Flash Flood Warning	OUN	Bryan, Choctaw	4 hr
May 9, 1:38 PM CDT	Flash Flood Warning	OUN	Bryan, Choctaw	3 hr
May 9, 2:40 PM CDT	Flash Flood Warning	OUN	Atoka, Pushmataha	3 hr
May 9, 3:46 PM CDT	Severe Thunderstorm Warning	OUN	Choctaw	44 min
May 9, 4:30 PM CDT	Flash Flood Warning	OUN	Bryan, Choctaw	3 hr
May 9, 6:00 PM CDT	Flash Flood Warning	OUN	Pushmataha	3 hr
May 8, 7:10 PM CDT	Tornado Warning	OUN	Clay	35 min
May 8, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Archer	49 min
May 8, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Clay	45 min

Nearby

Tornado Warnings in Oklahoma, 1993 Every tornado warning in 1993 Tornadoes in 1993

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.