Alert archive / Oklahoma / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 416

May 19, 200332 counties in Oklahoma; Wichita County, Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 19, 2003, 9:30 PM CDT for 32 counties in Oklahoma; Wichita County, Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 19, 2003, 9:30 PM CDT (02:30 UTC)
Expired
May 20, 2003, 3:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 33 counties

Atoka County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Tulsa County, OK, Wagoner County, OK, Wichita County, TX

The radar

The Norman radar (KTLX), 60 km from the middle of the area, began a volume at 02:32 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.

Warnings issued inside it

15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 19, 9:42 PM CDTSevere Thunderstorm WarningOUNCotton48 min
May 19, 9:43 PM CDTSevere Thunderstorm WarningOUNHughes47 min
May 19, 9:48 PM CDTSevere Thunderstorm WarningOUNPottawatomie, Seminole42 min
May 19, 9:49 PM CDTSevere Thunderstorm WarningOUNGarvin, Grady, McClain41 min
May 19, 10:04 PM CDTSevere Thunderstorm WarningOUNCleveland, Oklahoma26 min
May 19, 10:29 PM CDTSevere Thunderstorm WarningOUNCleveland, Cotton, Jefferson, Oklahoma, Pottawatomie46 min
May 19, 10:31 PM CDTSevere Thunderstorm WarningOUNGrady44 min
May 19, 10:53 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Stephens37 min
May 19, 11:15 PM CDTSevere Thunderstorm WarningOUNPottawatomie, Seminole45 min
May 19, 11:18 PM CDTSevere Thunderstorm WarningOUNGrady, McClain27 min
May 19, 11:21 PM CDTSevere Thunderstorm WarningOUNJefferson24 min
May 19, 11:41 PM CDTSevere Thunderstorm WarningOUNCleveland, McClain49 min
May 19, 11:42 PM CDTSevere Thunderstorm WarningOUNJefferson, Love48 min
May 20, 12:08 AM CDTSevere Thunderstorm WarningOUNCarter22 min
May 20, 2:52 AM CDTSevere Thunderstorm WarningOUNGrady33 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.5 hours before the alert went out and 44 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, Norman, OK at 00:00Z on 2003-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1418 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2003-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.19395878Sfc1 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
1418 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
913 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
293 m²/s²
Significant tornado parameter
1.5
Supercell composite
9.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 8:56 PM CDTMesoscale DiscussionSPCCarter, Cleveland, Coal, Comanche, Cotton, Creek and 18 more64 min
May 19, 11:47 PM CDTMesoscale DiscussionSPCAtoka, Caddo, Canadian, Carter, Cherokee, Cleveland and 27 more118 min

Nearby

Severe Thunderstorm Watches in Oklahoma, 2003Severe Thunderstorm Watches in Texas, 2003Every severe thunderstorm watch in 2003

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.