Alert archive / Oklahoma / Tornado Warnings in 1993

Tornado Warning 8, NWS Norman, OK

April 24, 1993Johnston County, Oklahoma

NWS Norman, OK issued this tornado warning at Apr 24, 1993, 11:32 PM CDT for Johnston County, Oklahoma. It was in force for 28 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: Apr 24, 1993, 11:32 PM CDT (04:32 UTC)
Expired: Apr 25, 1993, 12:00 AM CDT
In force: 28 min
Issued by: NWS Norman, OK
Area: Whole counties

County Johnston County, OK

What was reported inside it

Time	Report	Where	Remark
Apr 24, 11:35 PM CDT	Tornado F0	Wapanucka, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 4.5 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: 829 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1474 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.2

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 Apr 24, 9:35 PM CDT, 1 hour 57 minutes earlier.

Area forecast discussion, Apr 24, 9:35 PM CDT, 1 hour 57 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
920 PM CDT SAT APR 24 1993

TSTMS DVLPD DURG LATE AFTN BUT MOST REMAINED EAST OF FCST AREA. SOME
HAVE CONTD TO DVLP OVR SRN PTNS AREA OVR S CENT OK. HV RMVD MENTION
OF PCPN OVR MOST SXNS XCPT S CENT AND SERN OK AND OVR XTRM ERN PTNS
OF CLAY CO IN N TX. WL ADJUST TEMPS SLGTLY TO REFLECT CURRENT CONDS
AND WNDS HV BCM NLY OVR MOST SXNS XCPT S CENT AND SE. OTRW...LTL CHG TO
RMNDR OF FCST.

10

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

In the hours before

Special weather statement, Apr 24, 6:05 PM CDT, 5 hours 27 minutes before

OKZ004>021-TXZ076-TXZ077-250200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
555 PM CDT SAT APR 24 1

Special weather statement, Apr 24, 6:05 PM CDT, 5 hours 27 minutes before

OKZ004>021-TXZ076-TXZ077-250200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
555 PM CDT SAT APR 24 1

Local storm report, Apr 24, 11:15 PM CDT, 17 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
Apr 24, 10:25 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Pontotoc	35 min
Apr 24, 10:38 PM CDT	Severe Thunderstorm Warning	OUN	Coal	52 min
Apr 24, 10:50 PM CDT	Severe Thunderstorm Warning	OUN	Johnston, Murray, Pontotoc	40 min
Apr 24, 10:53 PM CDT	Tornado Warning	OUN	Coal	7 min
Apr 24, 11:26 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston	64 min
Apr 25, 12:10 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Pushmataha	50 min
Apr 25, 12:56 AM CDT	Severe Thunderstorm Warning	OUN	Pushmataha	64 min
Apr 25, 2:56 AM CDT	Severe Thunderstorm Warning	OUN	Pontotoc, Seminole	49 min
Apr 25, 5:04 AM CDT	Severe Thunderstorm Warning	OUN	Coal	41 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.