Alert archive / Oklahoma / Mesoscale Discussions in 2019

Mesoscale Discussion 248

March 29, 20194 states

The Storm Prediction Center issued this mesoscale discussion at Mar 29, 2019, 11:30 PM CDT for 4 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Mar 29, 2019, 11:30 PM CDT (04:30 UTC)
Expired
Mar 30, 2019, 2:00 AM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 55 counties

Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Cherokee County, KS, Labette County, KS, Barry County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Adair County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cherokee County, OK, Cleveland County, OK, Comanche County, OK, Craig County, OK, Creek County, OK, Custer County, OK, Delaware County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Haskell County, OK, Hughes County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Washita County, OK

The radar

The Norman radar (KTLX), 72 km from the middle of the area, began a volume at 04:33 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 4.5 hours before the alert went out and 88 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 2019-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 505 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, Norman, OK at 00:00Z on 2019-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 square meters per square second.193958Sfc1 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
505 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
275 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 12:59 AM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more6 hr
Mar 30, 3:52 PM CDTMesoscale DiscussionSPCChicot, Desha83 min
Mar 30, 1:54 PM CDTMesoscale DiscussionSPCMississippi2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2019Mesoscale Discussions in Missouri, 2019Mesoscale Discussions in Arkansas, 2019Every mesoscale discussion 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.