Alert archive / Oklahoma / Mesoscale Discussions in 2017

Mesoscale Discussion 363

March 28, 201738 counties in Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2017, 10:25 PM CDT for 38 counties in Oklahoma; 5 counties in Texas. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Mar 28, 2017, 10:25 PM CDT (03:25 UTC)
Expired
Mar 28, 2017, 11:30 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 43 counties

Caddo County, OK, Canadian County, OK, Carter County, OK, Cherokee 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, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Tulsa County, OK, Wagoner County, OK, Archer County, TX, Clay County, TX, Cooke County, TX, Montague County, TX, Wichita County, TX

The radar

The Norman radar (KTLX), 34 km from the middle of the area, began a volume at 03:27 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

Norman, OK (KOUN), launched 00:00Z, 3.4 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2017-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 307 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 2017-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 287 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
307 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
763 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
287 m²/s²
0-3 km storm-relative helicity
385 m²/s²
Significant tornado parameter
0.5
Supercell composite
6.7

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 28, 7:58 PM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Cleveland, Comanche, Cotton and 20 more92 min
Mar 28, 10:21 PM CDTSevere Thunderstorm WatchSPCCarter, Cleveland, Coal, Comanche, Cotton, Creek and 19 more7 hr
Mar 29, 1:21 AM CDTMesoscale DiscussionSPCAtoka, Carter, Coal, Garvin, Hughes, Johnston and 9 more84 min
Mar 29, 2:54 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, McCurtain, Marshall, Pushmataha96 min
Mar 29, 2:51 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Delaware, Mayes, Nowata and 2 more2 hr
Mar 29, 4:17 PM CDTTornado WatchSPCAdair, LeFlore, McCurtain, Sequoyah8 hr
Mar 29, 6:08 PM CDTMesoscale DiscussionSPCCraig, Ottawa97 min
Mar 28, 7:45 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Crosby, Deaf Smith and 9 more60 min
Mar 28, 9:07 PM CDTMesoscale DiscussionSPCBandera, Bexar, Blanco, Brown, Burnet, Callahan and 37 more23 min
Mar 28, 9:28 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bell, Bexar, Blanco, Bosque and 78 more8 hr
Mar 28, 11:58 PM CDTMesoscale DiscussionSPCAnderson, Bastrop, Bell, Bexar, Blanco, Bosque and 29 more92 min
Mar 29, 8:23 AM CDTMesoscale DiscussionSPCBrazoria, Calhoun, Chambers, Fort Bend, Galveston, Hardin and 12 more67 min
Mar 29, 1:31 PM CDTMesoscale DiscussionSPCBrazoria, Chambers, Galveston, Hardin, Harris, Jasper and 7 more2 hr
Mar 29, 2:11 PM CDTTornado WatchSPCAngelina, Chambers, Galveston, Hardin, Jasper, Jefferson and 6 more7 hr
Mar 29, 5:50 PM CDTMesoscale DiscussionSPCJasper, Newton, Orange115 min

Nearby

Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Texas, 2017Every mesoscale discussion in 2017

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.