Alert archive / Mississippi / Tornado Watches in 1998
Tornado Watch 299
The Storm Prediction Center issued this tornado watch at May 7, 1998, 12:45 AM CDT for 23 counties in Arkansas; 34 counties in Mississippi. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 7, 1998, 12:45 AM CDT (05:45 UTC)
- Expired
- May 7, 1998, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 57 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Cleveland County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Attala County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Coahoma County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Union County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS
The radar
The Little Rock radar (KLZK), 122 km from the middle of the area, began a volume at 05:44 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
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 12:52 AM CDT | Severe Thunderstorm Warning | LZK | Jefferson | 48 min |
| May 7, 1:21 AM CDT | Severe Thunderstorm Warning | LZK | Pulaski | 34 min |
| May 7, 2:03 AM CDT | Severe Thunderstorm Warning | LZK | Prairie | 32 min |
| May 7, 2:07 AM CDT | Severe Thunderstorm Warning | LZK | Monroe | 48 min |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 5.8 hours before the alert went out and 126 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
- 2412 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 4.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 8:00 PM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 26 more | 6 hr |
| May 6, 10:15 PM CDT | Tornado Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more | 6 hr |
| May 7, 3:30 AM CDT | Tornado Watch | SPC | Alcorn, Benton, Marshall, Prentiss, Tippah, Tishomingo and 1 more | 6 hr |
Nearby
Tornado Watches in Mississippi, 1998Tornado Watches in Arkansas, 1998Every tornado watch in 1998
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.