Alert archive / Arkansas / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 132
The Storm Prediction Center issued this severe thunderstorm watch at Apr 11, 2001, 10:00 AM CDT for 42 counties in Arkansas; 8 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2001, 10:00 AM CDT (15:00 UTC)
- Expired
- Apr 11, 2001, 3:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 50 counties
Arkansas County, AR, Baxter County, AR, Boone County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Marion County, AR, Monroe County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Phillips County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Butler County, MO, Carter County, MO, Douglas County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Ripley County, MO, Taney County, MO
The radar
The Little Rock radar (KLZK), 53 km from the middle of the area, began a volume at 15:00 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.
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 10:22 AM CDT | Severe Thunderstorm Warning | LZK | Johnson, Newton | 38 min |
| Apr 11, 10:31 AM CDT | Severe Thunderstorm Warning | SGF | Taney | 44 min |
| Apr 11, 10:42 AM CDT | Severe Thunderstorm Warning | LZK | Pope, Searcy | 48 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 3.0 hours before the alert went out and 220 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
- 614 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 815 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 256 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.4
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 11, 6:15 AM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Howard, Johnson and 8 more | 6 hr |
| Apr 10, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Franklin, Jefferson, Lincoln, Montgomery, Saint Charles and 4 more | 5 hr |
| Apr 11, 2:00 AM CDT | Tornado Watch | SPC | Atchison | 5 hr |
| Apr 11, 4:00 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Buchanan, Caldwell, Daviess, DeKalb, Gentry and 10 more | 5 hr |
| Apr 11, 9:30 AM CDT | Tornado Watch | SPC | Andrew, Barton, Bates, Benton, Buchanan, Caldwell and 47 more | 6 hr |
| Apr 11, 10:45 AM CDT | Tornado Watch | SPC | Atchison, Gentry, Grundy, Harrison, Holt, Nodaway and 1 more | 5 hr |
| Apr 11, 1:00 PM CDT | Tornado Watch | SPC | Adair, Audrain, Boone, Callaway, Clark, Cole and 20 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Arkansas, 2001Severe Thunderstorm Watches in Missouri, 2001Every severe thunderstorm watch in 2001
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.