Alert archive / Arkansas / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 182
The Storm Prediction Center issued this severe thunderstorm watch at Apr 29, 2002, 3:00 PM CDT for 22 counties in Arkansas; 8 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 29, 2002, 3:00 PM CDT (20:00 UTC)
- Expired
- Apr 29, 2002, 8:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lincoln County, AR, Lonoke County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Pulaski County, AR, Saline County, AR, Bolivar County, MS, Coahoma County, MS, Humphreys County, MS, Leflore County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Washington County, MS
The radar
The Little Rock radar (KLZK), 67 km from the middle of the area, began a volume at 20:00 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 29, 3:07 PM CDT | Severe Thunderstorm Warning | LZK | Cleveland | 38 min |
| Apr 29, 6:20 PM CDT | Severe Thunderstorm Warning | JAN | Bolivar | 25 min |
| Apr 29, 6:58 PM CDT | Severe Thunderstorm Warning | JAN | Bolivar, Washington | 32 min |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 8.0 hours before the alert went out and 206 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1917 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 291942 SEL2 SPC WW 291934 ARZ000-MSZ000-300100- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 182 STORM PREDICTION CENTER NORMAN OK 234 PM CDT MON APR 29 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHERN AND CENTRAL ARKANSAS NORTHWEST AND WEST CENTRAL MISSISSIPPI EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 300 PM UNTIL 800 PM CDT. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 50 STATUTE MILES EITHER SIDE OF A LINE FROM 25 MILES WEST OF HOT SPRINGS ARKANSAS TO 5 MILES NORTH NORTHEAST OF GREENWOOD MISSISSIPPI. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES SEVERE THUNDERSTORM WATCH NUMBER 181. WATCH NUMBER 181 WILL NOT BE IN EFFECT AFTER 300 PM CDT. DISCUSSION...STRONG/SEVERE THUNDERSTORMS HAVE REDEVELOPED OVER PARTS OF CENTRAL AR TO THE NORTH OF THE SURFACE FRONT IN ZONE OF WEAK LOW LEVEL WARM ADVECTION. WIND FIELDS VEER AND INCREASE WITH HEIGHT RESULTING IN STRONG DEEP LAYER SHEAR AND FAVORABLE ENVIRONMENT FOR ELEVATED SUPERCELLS. THE PRIMARY THREAT IS EXPECTED TO BE LARGE HAIL...HOWEVER IF CELLS CAN DEVELOP FARTHER SOUTH TOWARD THE FRONT AND BECOME SURFACE BASED...THREAT FOR STRING WIND GUSTS WOULD INCREASE. ADDITIONAL WATCHES...STORMS CONTINUE TO DEVELOP NEAR THE FRONT FROM SERN MS INTO THE FL PANHANDLE...AND THIS AREA IS BEING MONITORED FOR SEVERE POTENTIAL AND A POSSIBLE WW. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 28035. ...WEISS 351,0931 341,0895 325,0901 334,0934
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 10:15 AM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 28 more | 5 hr |
| Apr 28, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | Tishomingo | 4 hr |
| Apr 29, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Attala, Carroll, Choctaw, Clay, Holmes, Humphreys and 19 more | 4 hr |
| Apr 29, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | Attala, Clarke, Covington, Greene, Hinds, Holmes and 15 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Arkansas, 2002Severe Thunderstorm Watches in Mississippi, 2002Every severe thunderstorm watch in 2002
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.