Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 49, NWS Tulsa, OK

April 17, 1995Creek County, Osage County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 17, 1995, 9:47 PM CDT for Creek County, Osage County, Tulsa County, Oklahoma. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Apr 17, 1995, 9:47 PM CDT (02:47 UTC)
Expired
Apr 17, 1995, 10:30 PM CDT
In force
43 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Creek County, OK, Osage County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 61 km from the middle of the area, began a volume at 02:46 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, 2.8 hours before the alert went out and 153 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 1995-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1006 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 1995-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 182 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
1006 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
605 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
182 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 180249
SVRTUL
OKC037-113-143-180330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
947 PM CDT MON APR 17 1995
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST OKLAHOMA
 
   ...CREEK COUNTY...SOUTHEASTERN OSAGE COUNTY...TULSA COUNTY
 
AT 946 PM WEATHER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM
EASTERN OSAGE TO WESTERN CREEK COUNTY. THIS LINE WAS MOVING TO THE
NORTHEAST AT 40 MPH.
 
HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.

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 Apr 17, 9:04 PM CDT, 43 minutes earlier.

Area forecast discussion, Apr 17, 9:04 PM CDT, 43 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
900 PM CDT MON APR 17 1995

00Z RAOBS CONT TO INDCT A VERY UNSTABLE AMS OVR EOK/NWAR THIS EVE
JUST WAITING FOR THE LFTG MECH TO ARRIVE.  ACTVTY STARTING TO BCM
MORE ORGANIZED WEST OF EOK AND XPCT A SQLN TO DVLP AND SWEEP THRU
AREA OVRNGT.  TIMING HAS BEEN A BIT SLOER THAN XPCTD...SO WL NOT
TRY TO BE AS FINE ON TSTMS ENDING BY A CERTAIN TIME.  STILL XCPT
SQLN T:O BE OUT OF FA BFR DABRK THO.  AM A BIT WORRIED ABT PSBL FL
FLDG AS FF GUIDNC RATHER LO.  HWVR..BLV SQLN WL MOV FAST ENUF TO
AVOID A PROLONGED PD OF HVY RAINFALL.

..11..

.TUL...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 7:05 PM CDTSevere Thunderstorm WarningTSAPawnee40 min
Apr 17, 9:30 PM CDTSevere Thunderstorm WarningTSAOkfuskee45 min
Apr 17, 9:39 PM CDTSevere Thunderstorm WarningTSAOkmulgee51 min
Apr 17, 9:51 PM CDTTornado WarningTSAOkfuskee, Okmulgee39 min
Apr 17, 10:06 PM CDTSevere Thunderstorm WarningTSAOkfuskee39 min
Apr 17, 10:09 PM CDTTornado WarningTSAMcIntosh36 min
Apr 17, 10:15 PM CDTSevere Thunderstorm WarningTSAWashington30 min
Apr 17, 10:24 PM CDTTornado WarningTSAMuskogee36 min
Apr 17, 10:32 PM CDTSevere Thunderstorm WarningTSANowata, Rogers, Tulsa43 min
Apr 17, 10:32 PM CDTSevere Thunderstorm WarningTSAOkmulgee43 min
Apr 17, 10:32 PM CDTSevere Thunderstorm WarningTSAOsage43 min
Apr 17, 10:48 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee57 min
Apr 17, 10:51 PM CDTFlash Flood WarningTSACreek, Osage, Pawnee3 hr
Apr 17, 10:56 PM CDTTornado WarningTSAMuskogee, Wagoner49 min
Apr 17, 11:04 PM CDTFlash Flood WarningTSAMuskogee, Okmulgee3 hr
Apr 17, 11:14 PM CDTSevere Thunderstorm WarningTSANowata, Rogers46 min
Apr 17, 11:20 PM CDTTornado WarningTSACherokee40 min
Apr 17, 11:25 PM CDTSevere Thunderstorm WarningTSACraig, Delaware, Mayes50 min
Apr 17, 11:25 PM CDTSevere Thunderstorm WarningTSAOttawa50 min
Apr 17, 11:30 PM CDTSevere Thunderstorm WarningTSALeFlore, Sequoyah45 min
Apr 17, 11:30 PM CDTSevere Thunderstorm WarningTSAAdair45 min
Apr 17, 11:53 PM CDTTornado WarningTSACherokee, Delaware37 min
Apr 18, 12:00 AM CDTTornado WarningTSAAdair30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1995Every severe thunderstorm warning in 1995

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.