Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 44, NWS Norman, OK

March 18, 1998Grady County, McClain County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 18, 1998, 9:58 PM CST for Grady County, McClain County, Oklahoma. It was in force for 32 min. 4 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 18, 1998, 9:58 PM CST (03:58 UTC)
Expired: Mar 18, 1998, 10:30 PM CST
In force: 32 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Grady County, OK, McClain County, OK

What was reported inside it

Time	Report	Where	Remark
Mar 18, 10:05 PM CST	Thunderstorm Wind	Ninnekah, OK	Power lines and trees were downed along Highway 81 near the intersection of Highways 277 and 81 west of town. Some of the downed lines landed against a house, trapping the occupants for about 20 minutes. A 30x30 building was also destroyed on Highway 277 bet
Mar 18, 10:15 PM CST	Thunderstorm Wind	Tabler, OK	Severe thunderstorm winds completely destroyed a mobile home east of Tabler. An infant that was in the trailer sustained a serious head injury, and was treated at a local hospital. The other 4 occupants received only minor scrapes and bruises. A neighboring
Mar 18, 10:20 PM CST	Thunderstorm Wind 61	Blanchard, OK	Severe thunderstorm winds estimated at 70 mph (by an NWS employee) destroyed a shed, blew part of the roof off a barn, and damaged the roof of a house.
Mar 18, 10:30 PM CST	Thunderstorm Wind	Dibble, OK	Severe thunderstorm winds destroyed a mobile home, injuring one of the three occupants. Three other homes in the area were damaged and two mobile homes were blown off of their blocks. Large trees were also split.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 4.0 hours before the alert went out and 33 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 966 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 326 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 Mar 18, 9:30 PM CST, 28 minutes earlier.

Area forecast discussion, Mar 18, 9:30 PM CST, 28 minutes before

FPUS3 KOKC 190338
AFDOKC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
930 PM CST WED MAR 18 1998

500 MB TEMP AT ABQ HAS DROPPED TO -32C AND HARPER COUNTY REPORTS
RAIN HAS ALREADY CHANGED TO SNOW. NCEP HEAVY SNOW GUIDANCE AGREES
WELL WITH CURRENT FORECAST SO WILL NOT CHANGE WWA ATTM. STORMS ARE
MOVING RAPIDLY WHICH SHOULD EASE FLOOD/FLASH FLOOD CONCERNS
SOMEWHAT.  HOWEVER...WITH GROUND COMPLETELY SATURATED AND RIVER
STILL IN FLOOD OVER PORTIONS OF FA...WILL LEAVE FLASH FLOOD WATCH.

..10..

.OKC...
OK...FLASH FLOOD WATCH TONIGHT ZONES 16>48..50>52.
     WINTER STORM WARNING TONIGHT AND THURSDAY MORNING ZONES 4>6..
     9>11..14..15.
     WINTER STORM WATCH THURSDAY ZONES 7..8..12..13
TX...FLASH FLOOD WATCH TONIGHT ZONES 83>90.

In the hours before

Local storm report, Mar 18, 8:11 PM CST, 1 hour 47 minutes before

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Local storm report, Mar 18, 8:28 PM CST, 1 hour 30 minutes before

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Local storm report, Mar 18, 8:43 PM CST, 1 hour 15 minutes before

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Local storm report, Mar 18, 8:50 PM CST, 1 hour 8 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
845 PM WED MAR 18 1998

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

0840 PM    LAKE KICKAPOO             TX   0.88 INCH HAIL.
03/18/98   ARCHER

0845 PM    4 SW ARCHER CITY          TX   1.00 INCH HAIL.
03/18/98   ARCHER

LINDLEY

Local storm report, Mar 18, 9:53 PM CST, 5 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
950 PM WED MAR 18 1998

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

0945 PM    5 S WAURIKA               OK   0.75 INCH HAIL.
03/18/98   JEFFERSON

LINDLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 9:37 PM CST	Severe Thunderstorm Warning	OUN	Jefferson	53 min
Mar 18, 10:19 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, McClain	41 min
Mar 18, 10:52 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	53 min
Mar 18, 11:07 PM CST	Severe Thunderstorm Warning	OUN	Love, Marshall	53 min
Mar 18, 11:07 PM CST	Severe Thunderstorm Warning	OUN	Johnston, Pontotoc	53 min
Mar 18, 11:17 PM CST	Severe Thunderstorm Warning	OUN	Pottawatomie	43 min
Mar 18, 11:29 PM CST	Severe Thunderstorm Warning	OUN	Seminole	31 min
Mar 18, 11:42 PM CST	Severe Thunderstorm Warning	OUN	Bryan	48 min
Mar 18, 11:54 PM CST	Severe Thunderstorm Warning	OUN	Hughes	51 min
Mar 19, 12:12 AM CST	Severe Thunderstorm Warning	OUN	Atoka, Coal	48 min
Mar 18, 8:00 PM CST	Severe Thunderstorm Warning	OUN	Baylor	60 min
Mar 18, 8:28 PM CST	Severe Thunderstorm Warning	OUN	Archer	47 min
Mar 18, 9:07 PM CST	Severe Thunderstorm Warning	OUN	Clay	53 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998 Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.