Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 196, NWS Norman, OK

May 15, 1998Beckham County, Roger Mills County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 15, 1998, 2:05 AM CDT for Beckham County, Roger Mills County, Oklahoma. It was in force for 40 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
May 15, 1998, 2:05 AM CDT (07:05 UTC)
Expired
May 15, 1998, 2:45 AM CDT
In force
40 min
Issued by
NWS Norman, OK
Area
Whole counties

Counties Beckham County, OK, Roger Mills County, OK

What was reported inside it

TimeReportWhereRemark
May 15, 2:30 AM CDTThunderstorm WindDurham, OK
May 15, 2:30 AM CDTHail 0.75Durham, OK
May 15, 2:40 AM CDTThunderstorm WindCheyenne, OK
May 15, 2:55 AM CDTThunderstorm Wind 70Dempsey, OK

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

Amarillo Airport, TX (KAMA), launched 00:00Z, 7.1 hours before the alert went out and 184 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, Amarillo Airport, TX at 00:00Z on 1998-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 joules per kilogram.LCLEL10008507005003002001001 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, Amarillo Airport, TX at 00:00Z on 1998-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
39 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
3541 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
62 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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 8:47 PM CDTSevere Thunderstorm WarningOUNBeckham, Harmon43 min
May 14, 9:07 PM CDTSevere Thunderstorm WarningOUNGreer38 min
May 14, 9:25 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills35 min
May 14, 9:47 PM CDTSevere Thunderstorm WarningOUNHarmon43 min
May 14, 10:00 PM CDTSevere Thunderstorm WarningOUNDewey, Ellis, Roger Mills45 min
May 14, 10:07 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer38 min
May 14, 10:17 PM CDTSevere Thunderstorm WarningOUNWoodward43 min
May 14, 10:25 PM CDTSevere Thunderstorm WarningOUNRoger Mills50 min
May 14, 10:30 PM CDTSevere Thunderstorm WarningOUNHarmon45 min
May 14, 10:48 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer42 min
May 14, 11:01 PM CDTSevere Thunderstorm WarningOUNWoods44 min
May 15, 2:05 AM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson40 min
May 15, 2:45 AM CDTSevere Thunderstorm WarningOUNBeckham, Kiowa, Washita60 min
May 15, 2:45 AM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson60 min
May 15, 2:45 AM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills60 min
May 15, 3:15 AM CDTSevere Thunderstorm WarningOUNTillman45 min
May 15, 3:20 AM CDTSevere Thunderstorm WarningOUNHarper, Woodward55 min
May 15, 3:20 AM CDTSevere Thunderstorm WarningOUNCuster, Dewey55 min
May 15, 3:45 AM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Kiowa, Washita60 min
May 15, 3:52 AM CDTSevere Thunderstorm WarningOUNBlaine, Major, Woods53 min
May 15, 5:30 AM CDTSevere Thunderstorm WarningOUNGarfield, Noble45 min
May 15, 5:34 AM CDTSevere Thunderstorm WarningOUNGrant, Kay41 min
May 15, 5:58 AM CDTSevere Thunderstorm WarningOUNCleveland, McClain47 min
May 15, 6:34 AM CDTSevere Thunderstorm WarningOUNLincoln, Payne41 min
May 15, 2:05 AM CDTSevere Thunderstorm WarningOUNFoard40 min
May 15, 2:20 AM CDTSevere Thunderstorm WarningOUNKnox25 min
May 15, 2:45 AM CDTSevere Thunderstorm WarningOUNBaylor, Foard, Hardeman, Knox, Wilbarger60 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998Every 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.