Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 170, NWS Norman, OK

April 29, 1995Grant County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 29, 1995, 3:07 AM CDT for Grant County, Oklahoma. It was in force for 38 min.

The area

The counties it named.

The facts

Issued: Apr 29, 1995, 3:07 AM CDT (08:07 UTC)
Expired: Apr 29, 1995, 3:45 AM CDT
In force: 38 min
Issued by: NWS Norman, OK
Area: Whole counties

County Grant County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 8.1 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-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: 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, 5 hours 4 minutes earlier.

Area forecast discussion, Apr 28, 10:03 PM CDT, 5 hours 4 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.

In the hours before

Local storm report, Apr 29, 2:48 AM CDT, 19 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
245 AM CDT THU APR 27 1995

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

117 AM        4 E OF NEWKIRK        OK       1.00 INCH HAIL
4/29/95           KAY

128 AM         BLACKWELL            OK       0.88 - 1.00 INCH HAIL
4/29/95           KAY

213 AM         4 SW OF PONC:A CITY   OK       0.75 INCH HAIL

 _
MEG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 1:07 AM CDT	Severe Thunderstorm Warning	OUN	Kay	38 min
Apr 29, 1:50 AM CDT	Severe Thunderstorm Warning	OUN	Kay	40 min
Apr 29, 2:25 AM CDT	Flash Flood Warning	OUN	Grant	3 hr
Apr 29, 2:40 AM CDT	Flash Flood Warning	OUN	Kay	3 hr
Apr 29, 5:00 AM CDT	Flash Flood Warning	OUN	Kay	5 hr
Apr 29, 6:34 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	41 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1995 Every 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.