Alert archive / Arkansas / Mesoscale Discussions in 2017
Mesoscale Discussion 1732
The Storm Prediction Center issued this mesoscale discussion at Oct 22, 2017, 1:44 AM CDT for 4 states. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Oct 22, 2017, 1:44 AM CDT (06:44 UTC)
- Expired
- Oct 22, 2017, 3:15 AM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 58 counties
Baxter County, AR, Boone County, AR, Carroll County, AR, Clark County, AR, Conway County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Van Buren County, AR, Yell County, AR, Camden County, MO, Christian County, MO, Cole County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Gasconade County, MO, Howell County, MO, Laclede County, MO, Maries County, MO, Miller County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Pulaski County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO, McCurtain County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Franklin County, TX, Morris County, TX, Red River County, TX, Titus County, TX
The radar
The Western Arkansas radar (KSRX), 122 km from the middle of the area, began a volume at 06:42 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, 6.7 hours before the alert went out and 99 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
- 700 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1064 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
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 |
|---|---|---|---|---|
| Oct 21, 8:34 PM CDT | Mesoscale Discussion | SPC | Benton, Washington | 86 min |
| Oct 21, 10:42 PM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Howard, Little River, Logan and 6 more | 93 min |
| Oct 21, 11:56 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Benton, Boone, Bradley, Calhoun and 54 more | 7 hr |
| Oct 22, 4:57 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 29 more | 93 min |
| Oct 21, 8:10 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Caldwell, Camden and 40 more | 95 min |
| Oct 21, 10:06 PM CDT | Severe Thunderstorm Watch | SPC | Barry, Barton, Cedar, Christian, Dade, Dallas and 12 more | 5 hr |
| Oct 21, 7:24 PM CDT | Tornado Watch | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 33 more | 7 hr |
| Oct 21, 7:53 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Callahan, Coleman, Collin, Comanche, Cooke and 28 more | 6 hr |
| Oct 21, 10:09 PM CDT | Mesoscale Discussion | SPC | Callahan, Collin, Cooke, Dallas, Denton, Eastland and 14 more | 96 min |
Nearby
Mesoscale Discussions in Arkansas, 2017Mesoscale Discussions in Missouri, 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.