Alert archive / Arkansas / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 549
The Storm Prediction Center issued this severe thunderstorm watch at Jul 12, 2001, 10:30 PM CDT for 28 counties in Arkansas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2001, 10:30 PM CDT (03:30 UTC)
- Expired
- Jul 13, 2001, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 28 counties
Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Ouachita County, AR, Perry County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Union County, AR, White County, AR, Woodruff County, AR
The radar
The Little Rock radar (KLZK), 99 km from the middle of the area, began a volume at 03:29 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 10:30 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Perry | 60 min |
| Jul 12, 10:33 PM CDT | Severe Thunderstorm Warning | LZK | Pulaski | 57 min |
| Jul 12, 11:22 PM CDT | Severe Thunderstorm Warning | LZK | Pulaski, Saline | 53 min |
| Jul 12, 11:25 PM CDT | Severe Thunderstorm Warning | LZK | Jefferson, Lonoke | 50 min |
| Jul 12, 11:57 PM CDT | Severe Thunderstorm Warning | LZK | Grant | 63 min |
| Jul 13, 12:15 AM CDT | Severe Thunderstorm Warning | LZK | Jefferson | 50 min |
| Jul 13, 12:54 AM CDT | Severe Thunderstorm Warning | LZK | Perry | 51 min |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 3.5 hours before the alert went out and 249 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
- 2284 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1120 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 13.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
Nearby
Severe Thunderstorm Watches in Arkansas, 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.