Alert archive / Oklahoma / Tornado Warnings in 1993

Tornado Warning 28, NWS Tulsa, OK

September 13, 1993Muskogee County, Okmulgee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Sep 13, 1993, 6:39 PM CDT for Muskogee County, Okmulgee County, Oklahoma. It was in force for 51 min.

The area

The counties it named.

The facts

Issued: Sep 13, 1993, 6:39 PM CDT (23:39 UTC)
Expired: Sep 13, 1993, 7:30 PM CDT
In force: 51 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Muskogee County, OK, Okmulgee County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.7 hours before the alert went out and 163 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: 1199 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 583 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 239 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTUL 132340
TORTUL
OKC101-111-140030-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
639 PM CDT MON SEP 13 1993
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  730 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONSS...
 
IN EAST CENTRAL OKLAHOMA
 
   ...NORTHERN MUSKOGEE COUNTY
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN OKMULGEE COUNTY
 
AT 635 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A POSSIBLE TORNADO
JUST SOUTH OF OKMULGEE. ANOTHER TORNADO WAS SPOTTED IN MUSKOGEE.
MOVEMENT WAS NORTHEAST AT 30 MPH.
 
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE IN THE
PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE.
OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.
STAY AWAY FROM OUTSIDE WALLS AND AVOID WINDOWS.  ABANDON CARS AND
MOBILE HOMES FOR A REINFORCED BUILDING OR GET IN A GROUND DEPRESSION.
 
KEEP TUNED TO THIS STATIONf FOR THE LATEST WEATHER BULLETINS.
 
 
 
&

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 Tulsa, OK wrote its last area forecast discussion before this tornado warning went out at Sep 13, 2:34 PM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Sep 13, 2:34 PM CDT, 4 hours 5 minutes before

AREA FORECAST DISCUSSION FOR EASTERN OKLAHOMA
NATIONAL WEATHER SERVICE TULSA OK
225 PM CDT MON SEP 13 1993

LRG AREA OF PCP CONTINUED OVER MOST OF FA. BATCH OF RW/TRW DVLPED
ALONG H3 JET WELL AHEAD OF FNT FROM CNU TO NORTH OF OKC. GUD MOIST
CONV AHEAD OF FNT SO STORMS SHUD CONT TO DEVLP REST OF THE
AFTERNOON. MORN MODELS WERE FASTER IN LIFTING OUT UPPER SYS AND
MOVING FNT. FNT MADE GUD PROGRESS THIS MORN...MOVNG ABT 30 KNTS
BETWEEN GCK-GAG. FNT HAS SLOWED SOME THIS AFTERNOON WITH GUSTY S
WNDS AHEAD OF FNT NOT VEERING MUCH. MODELS IN GENERAL AGREEMENT IN
MOVING FNT INTO SE OK BY MORN. REMNANTS OF LIDIA WILL MOVE INTO NE
TX FAR SE OK ALONG WITH FNT. WILL GO ALONG WITH NMC QPF EST BUT
FEEL AREA OF 4+ INCHES CUD EXTND INTO EC-SE OK. NEARLY 4 INCHES OF
RAIN WAS REPORTED IN NORTHERN OSAGE CNTY FROM THIS MORNINGS RAINS
AND FROM 1 TO 2 INCHES WILL BE COMMON OVER THE AREA BEFORE HVY PCP
FROM THE FRONT ENTERS THE AREA. THREAT FOR FF NOT AS HI AS
OTHERWISE WUD BE SINCE ITS BEEN FAIRLY DRY...BUT FEEL FFA IS NEEDED
DU TO PSBL ENHANCMENT BY LIDIA AND HISTORY OF PAST HVY PCP EVENTS.

FRONT WILL PROB ENTER FA BY 6PM WITH WNDSHFT THRU TUL ARND
9PM...AND THRU MLC ARND MID.  FNT WILL END CHC FOR HVY RAIN BUT R-L
WILL LINGER INTO TUE MORN. WILL FOLLOW NGM TMPS/POPS FAIRLY CLOSELY
THRU FCST.

/13
TUL  051/055 045/070 051 +400
MLC  061/065 045/070 049 +61-
BVO  050/053 042/070 XXX +300
IDB  072/074 053/070 XXX ++32

.OK...FFA ZNS 26>30 xREST OF THE AFTERNOON AND THIS EVE.
      FFA ZNS 31>34-40 TONIGHT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 13, 5:16 PM CDT	Tornado Warning	TSA	Cherokee, Wagoner	22 min
Sep 13, 5:22 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	53 min
Sep 13, 5:41 PM CDT	Tornado Warning	TSA	Okfuskee	34 min
Sep 13, 5:58 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	62 min
Sep 13, 6:10 PM CDT	Flash Flood Warning	TSA	Okfuskee	5 hr
Sep 13, 6:47 PM CDT	Flash Flood Warning	TSA	Okmulgee, Tulsa, Wagoner	5 hr

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.