Alert archive / Arkansas / Mesoscale Discussions in 2016
Mesoscale Discussion 471
The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2016, 1:35 AM CDT for 51 counties in Arkansas; 9 parishes in Louisiana; 46 counties in Texas. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2016, 1:35 AM CDT (06:35 UTC)
- Expired
- Apr 27, 2016, 3:30 AM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
All 106 counties
Baxter County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jefferson County, AR, Johnson County, AR, Lafayette County, AR, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Lincoln Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Anderson County, TX, Angelina County, TX, Bandera County, TX, Bastrop County, TX, Blanco County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Comal County, TX, Edwards County, TX, Fayette County, TX, Freestone County, TX, Gillespie County, TX, Gregg County, TX, Grimes County, TX, Guadalupe County, TX, Harrison County, TX, Hays County, TX, Houston County, TX, Kendall County, TX, Kerr County, TX, Lee County, TX, Leon County, TX, Madison County, TX, Marion County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Real County, TX, Robertson County, TX, Rusk County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Travis County, TX, Trinity County, TX, Upshur County, TX, Walker County, TX, Washington County, TX, Williamson County, TX
The radar
The Shreveport radar (KSHV), 152 km from the middle of the area, began a volume at 06:37 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
Shreveport, LA (KBAD), launched 00:00Z, 6.6 hours before the alert went out and 160 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
- 1971 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1327 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.8
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 9:36 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Garland, Hempstead and 18 more | 114 min |
| Apr 26, 10:21 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Boone, Carroll, Clark, Columbia, Conway and 26 more | 9 hr |
| Apr 27, 4:28 AM CDT | Mesoscale Discussion | SPC | Beauregard, Natchitoches, Red River, Sabine, Vernon | 92 min |
| Apr 27, 4:56 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Beauregard, Calcasieu, Cameron, De Soto, Evangeline and 9 more | 5 hr |
| Apr 27, 7:30 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 19 more | 2 hr |
| Apr 27, 7:54 AM CDT | Severe Thunderstorm Watch | SPC | Acadia, Ascension, Assumption, Avoyelles, Catahoula, Concordia and 29 more | 7 hr |
| Apr 26, 8:52 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Clay, Coleman, Collin and 34 more | 53 min |
Nearby
Mesoscale Discussions in Arkansas, 2016Mesoscale Discussions in Texas, 2016Mesoscale Discussions in Louisiana, 2016Every mesoscale discussion in 2016
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.