Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 912, NWS Norman, OK

October 15, 2019Atoka County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 15, 2019, 6:41 PM CDT for Atoka County, Oklahoma. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 15, 2019, 6:41 PM CDT (23:41 UTC)
Expired
Oct 15, 2019, 7:30 PM CDT
In force
49 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Atoka County, OK

The radar

The Norman radar (KTLX), 155 km from the middle of the area, began a volume at 23:44 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.7 hours before the alert went out and 207 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, Fort Worth, TX at 12:00Z on 2019-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 737 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, Fort Worth, TX at 12:00Z on 2019-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 247 square meters per square second.1939587897Sfc1 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
737 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
998 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
247 m²/s²
0-3 km storm-relative helicity
234 m²/s²
Significant tornado parameter
0.4
Supercell composite
7.7

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 15, 3:10 PM CDTSpecial Weather StatementOUNAtoka35 min
Oct 15, 4:43 PM CDTSpecial Weather StatementOUNAtoka47 min
Oct 15, 4:49 PM CDTSpecial Weather StatementOUNBryan41 min
Oct 15, 5:52 PM CDTSpecial Weather StatementOUNBryan53 min
Oct 15, 6:01 PM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Johnston44 min
Oct 15, 6:02 PM CDTSpecial Weather StatementOUNHughes43 min
Oct 15, 6:04 PM CDTSpecial Weather StatementOUNBryan41 min
Oct 15, 6:12 PM CDTSpecial Weather StatementOUNMarshall48 min
Oct 15, 6:25 PM CDTSpecial Weather StatementOUNAtoka65 min
Oct 15, 6:49 PM CDTSpecial Weather StatementOUNBryan26 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019Every severe thunderstorm warning in 2019

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.