Alert archive / Oklahoma / Mesoscale Discussions in 2015
Mesoscale Discussion 377
The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2015, 12:43 PM CDT for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2015, 12:43 PM CDT (17:43 UTC)
- Expired
- Apr 19, 2015, 2:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 100 counties
Benton County, AR, Carroll County, AR, Clark County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sumner County, KS, Wilson County, KS, Barry County, MO, Jasper County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Alfalfa County, OK, Atoka County, OK, Blaine County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Major County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McCurtain County, OK, McIntosh County, OK, Murray 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, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Bowie County, TX, Fannin County, TX, Lamar County, TX, Red River County, TX
The radar
The Tulsa radar (KINX), 99 km from the middle of the area, began a volume at 17:43 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 12:00Z, 5.7 hours before the alert went out and 162 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.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- -300 J/kg
- Mixed-layer LCL
- 1275 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Conway, Crawford and 22 more | 6 hr |
| Apr 19, 1:52 PM CDT | Mesoscale Discussion | SPC | Columbia, Lafayette, Little River, Miller | 53 min |
| Apr 19, 2:31 PM CDT | Severe Thunderstorm Watch | SPC | Bradley, Calhoun, Clark, Cleveland, Columbia, Dallas and 10 more | 7 hr |
| Apr 19, 4:45 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 28 more | 2 hr |
| Apr 19, 5:46 PM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 36 more | 6 hr |
| Apr 18, 8:11 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellis and 24 more | 64 min |
| Apr 18, 8:27 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Gove, Logan, Rawlins, Sheridan and 3 more | 63 min |
| Apr 18, 7:46 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Comanche, Custer, Dewey, Ellis and 10 more | 89 min |
| Apr 18, 8:02 PM CDT | Mesoscale Discussion | SPC | Carter, Cleveland, Coal, Creek, Garvin, Hughes and 13 more | 88 min |
| Apr 18, 8:24 PM CDT | Mesoscale Discussion | SPC | Anderson, Bastrop, Bell, Blanco, Brazos, Burleson and 25 more | 96 min |
| Apr 19, 6:56 PM CDT | Mesoscale Discussion | SPC | Austin, Chambers, Colorado, Fort Bend, Galveston, Harris and 5 more | 64 min |
Nearby
Mesoscale Discussions in Oklahoma, 2015Mesoscale Discussions in Arkansas, 2015Mesoscale Discussions in Kansas, 2015Every mesoscale discussion in 2015
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.