Alert archive / Arkansas / Mesoscale Discussions in 2005
Mesoscale Discussion 874
The Storm Prediction Center issued this mesoscale discussion at May 14, 2005, 4:23 AM CDT for 4 states. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- May 14, 2005, 4:23 AM CDT (09:23 UTC)
- Expired
- May 14, 2005, 7:00 AM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 59 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jackson County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Dunklin County, MO, Pemiscot County, MO, Coahoma County, MS, DeSoto County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Little Rock radar (KLZK), 50 km from the middle of the area, began a volume at 09:27 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
Springfield, MO (KSGF), launched 00:00Z, 9.4 hours before the alert went out and 292 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
- 650 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1178 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.1
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 |
|---|---|---|---|---|
| May 14, 10:00 AM CDT | Mesoscale Discussion | SPC | Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc and 3 more | 90 min |
| May 13, 7:34 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Madison, Mississippi and 6 more | 26 min |
| May 13, 7:50 PM CDT | Severe Thunderstorm Watch | SPC | Mississippi, New Madrid, Scott | 5 hr |
| May 13, 10:04 PM CDT | Mesoscale Discussion | SPC | Mississippi | 86 min |
| May 14, 11:10 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bedford, Bledsoe, Blount, Campbell, Cannon and 31 more | 7 hr |
| May 14, 12:59 PM CDT | Mesoscale Discussion | SPC | Carter, Johnson, Sullivan, Unicoi, Washington | 91 min |
| May 14, 2:09 PM CDT | Mesoscale Discussion | SPC | Anderson, Bedford, Bledsoe, Blount, Campbell, Cannon and 29 more | 96 min |
Nearby
Mesoscale Discussions in Arkansas, 2005Mesoscale Discussions in Tennessee, 2005Mesoscale Discussions in Mississippi, 2005Every mesoscale discussion in 2005
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.