Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 233, NWS Tulsa, OK

June 29, 1993Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 29, 1993, 4:22 AM CDT for Ottawa County, Oklahoma. It was in force for 53 min.

The area

The counties it named.

The facts

Issued: Jun 29, 1993, 4:22 AM CDT (09:22 UTC)
Expired: Jun 29, 1993, 5:15 AM CDT
In force: 53 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Ottawa County, OK

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 9.4 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: 1744 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1185 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 7.3

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 Jun 29, 3:39 AM CDT, 43 minutes earlier.

Area forecast discussion, Jun 29, 3:39 AM CDT, 43 minutes before

AREA FORECAST DISCUSSION FOR EASTERN OKLAHOMA
NATIONAL WEATHER SERVICE TULSA OK
330 AM CDT TUE JUN 29 1993

MODELS AND MOS NUMS INTERESTING CONSIDERING LAST NIGHT IT LOOKED
HOT AND DUSTY THRU THIS FCST ANYWAY. TRW GOING IN SE KS MAY JUST
SKIM FAR NE OK SO WILL HAVE TO INCLUDE MORN POPS THERE. ACTIVITY
GOT GOING IN H85 CONV ZONE AS SHOWN BY NGM GRIDDAT. HI VVEL AT H85
AND H7 ALSO COINSIDES WELL WITH PCP. WPROFS SHOWING 45-50 KNT LLVL
JET OUT IN WRN KS/OK BUT ATMOS HAS MEGA CAP OUT THERE. SO IF A
STRAY TRW DOES GET GOING IT WILL DIE OUT QUICKLY AFTER SUNRISE.
TEMPS TODAY SHUD BE A TAD ABV YESTERDAY'S AS ETA/NGM GRIDDAT PROGS
HAVE ATMOS WARMING A FEW DEGS IN LLVLS. CLDS/WNDS SHUD BEHAVE
SIMILAR TO YESTERDAY ALSO OVR FA.

S/W OVER BAHA MEX AND S/W IN NRN STREAM WILL BE WX MAKERS FOR FA IN
LATER PERIODS. NGM/AVN HANDLE H30 JET NEARLY THE SAME PULLING A
PIECE OF IT DOWN INTO CENT KS BY THIS EVE. ETA KEEPS JET IN WY/NE.
THIS DIFF IS ALSO SEEN IN HOW THE MODELS HANDLE THE H5 RDG OVR THE
AREA. NGM/AVN SHFT THE RDG E AND PUT FA IN W/SW FLO WHILE ETA KEEPS
THE RDG MORE INTACT. TROP MOISTURE IN MEX AHEAD OF BAHA SYS IS
PULLED NE BY NGM. FRH DAT AND GRID H3 RH FIELDS SHOW THIS. SFC FNT
GETS PUSHED INTO SRN KS BY WED EVE AND NGM TRIES TO WEAKEN CAP
AHEAD OF FNT INTO NE OK ON WED. BEST CHC FOR PCP IN NE OK SHUD BE
WED NIGHT. AVN HAS S/W PAST FA BY 12Z THURS SO WILL NOT PUT POPS IN
EXTD.

INCREASING HI CLDS SHUD KEEP TEMPS A FEW DEGS COOLER ON WED.
FOLLOWED NGM MOS GENERALLY BUT DIDN'T GO AS HI ON POPS.

TRW IN SE KS GETING CLOSE TO OTTAWA CNTY WILL HAVE TO WATCH
CLOSELY.

TUL 092/076 091/075 090 1212
MLC 095/077 091/074 091 --11
BVO 094/075 092/072 091 1222
IDB 095/077 091/074 090 --11
...13...
.OK...NONE.

In the hours before

Special weather statement, Jun 29, 3:54 AM CDT, 28 minutes before

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Special weather statement, Jun 29, 3:55 AM CDT, 27 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 5:54 AM CDT	Severe Thunderstorm Warning	TSA	Benton	66 min
Jun 29, 8:29 AM CDT	Flash Flood Warning	TSA	Madison	91 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1993 Every severe thunderstorm warning 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.