Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 21, NWS Norman, OK

March 6, 1995Johnston County, Marshall County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 6, 1995, 8:35 PM CST for Johnston County, Marshall County, Oklahoma. It was in force for 40 min.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Mar 6, 1995, 8:35 PM CST (02:35 UTC)
Expired: Mar 6, 1995, 9:15 PM CST
In force: 40 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Johnston County, OK, Marshall County, OK

The radar

The Norman radar (KTLX), 136 km from the middle of the area, began a volume at 02:34 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, 2.6 hours before the alert went out and 130 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: 102 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: -35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 070232 RRA
SVROKC
OKC069-095-070315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
835 PM CST MON MAR 06 1995

THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CST FOR
PEOPLE IN THE FOLLOWING COUNTIES

IN SOUTHEASTERN OKLAHOMA
     JOHNSTON AND NORTHERN MARSHALL

INCLUDING THE FOLLOWING LOCATIONS
     BROMIDE...EMET...FILLMORE...LITTLE CITY...MADILL...
     MANNSVILLE...MILBURN...MILL CREEK...NIDA...OAKLAND...RAVIA
     ...REAGAN...RUSSETT...TISHOMINGO...TROY AND WAPANUCKA

AT 835 PM CST RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES
EAST-NORTHEAST OF OAKLAND.

THE STORM WAS MOVING EAST-NORTHEAST AT 30 MPH.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 60 MPH OR HIGHER...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO DONT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

LAT...LON 3406  9654 3408  9695 3449  9688 3443  9639

CHURCHILL

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 7:57 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc	48 min
Mar 6, 8:25 PM CST	Severe Thunderstorm Warning	OUN	Comanche, Grady, Stephens	35 min
Mar 6, 8:43 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc	47 min
Mar 6, 9:50 PM CST	Severe Thunderstorm Warning	OUN	Bryan	40 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; radar from the NEXRAD Level II archive.