Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 169, NWS Norman, OK

April 29, 1995Kay County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 29, 1995, 1:50 AM CDT for Kay County, Oklahoma. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Apr 29, 1995, 1:50 AM CDT (06:50 UTC)
Expired
Apr 29, 1995, 2:30 AM CDT
In force
40 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Kay County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 6.8 hours before the alert went out and 179 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 1995-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 174 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 1995-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 199 square meters per square second.19395878Sfc1 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
174 J/kg
Mixed-layer CIN
-253 J/kg
Mixed-layer LCL
886 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
199 m²/s²
0-3 km storm-relative helicity
409 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 severe thunderstorm 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 severe thunderstorm warning went out at Apr 28, 10:03 PM CDT, 3 hours 47 minutes earlier.

Area forecast discussion, Apr 28, 10:03 PM CDT, 3 hours 47 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE OKLAHOMA CITY OKLAHOMA
1005 PM CDT FRI APR 28 1995

STRNG CAP ACRS AREA CONT TO SUPPRESS TSTM DVLPMNT. WL LWR POPS A LTL IN
CNTRL AND SERN ZNS... ALTHOUGH WITH WK S/W COMING INTO THE PICTURE...
AND INCRSG LOW LVL JET THRU THE NIGHT... SOME POTENTIAL RMNS TO GET
THROUGH THE CAP. STEEP MID LVL LAPSE RATES... VERT WIND PRFILE... AND
DECENT LOW LVL MSTR STILL POSES SOME PSBLTY OF A SVR TSTM. CNVCNTN DVLPG
NRN OK PAST HR MAY BE RELATED TO WAA ARND H8 LVL IN AREA WHERE CAP IS
NOT QUITE AS STRNG. THIS ACTVTY SHUD GENLY SHIFT SLOWLY NEWD INTO KS. WL
ALSO EASE BACK ON WIND SPDS.

CS

.OKC...NONE.
.TX...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 1:07 AM CDTSevere Thunderstorm WarningOUNKay38 min
Apr 29, 2:25 AM CDTFlash Flood WarningOUNGrant3 hr
Apr 29, 2:40 AM CDTFlash Flood WarningOUNKay3 hr
Apr 29, 3:07 AM CDTSevere Thunderstorm WarningOUNGrant38 min
Apr 29, 5:00 AM CDTFlash Flood WarningOUNKay5 hr
Apr 29, 6:34 PM CDTSevere Thunderstorm WarningOUNBryan, Marshall41 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.