Alert archive / Mississippi / Special Weather Statements in 2021
Special Weather Statement, NWS Jackson, MS
NWS Jackson, MS issued this special weather statement at Aug 15, 2021, 1:21 PM CDT for Forrest County, Mississippi. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 15, 2021, 1:21 PM CDT (18:21 UTC)
- Expired
- Aug 15, 2021, 1:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Jackson, MS
- Hail
- 0.25 in
- Wind
- 40
County Forrest County, MS
The radar
The Mobile radar (KMOB), 108 km from the middle of the area, began a volume at 18:25 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.4 hours before the alert went out and 102 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
- 735 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 968 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
412
WWUS84 KJAN 151821
SPSJAN
Special Weather Statement
National Weather Service Jackson MS
121 PM CDT Sun Aug 15 2021
MSZ074-151845-
Forrest MS-
121 PM CDT Sun Aug 15 2021
...A strong thunderstorm will impact portions of southeastern Forrest
County through 145 PM CDT...
At 120 PM CDT, Doppler radar was tracking a strong thunderstorm over
Rock Hill, or 15 miles south of Hattiesburg, moving northeast at 10
mph.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Mclaurin, Brooklyn, Maxie and Rock Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3102 8935 3115 8935 3129 8919 3123 8915
3100 8915 3091 8931
TIME...MOT...LOC 1820Z 235DEG 7KT 3109 8926
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
JCThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:12 PM CDT | Special Weather Statement | JAN | Lamar | 48 min |
| Aug 14, 7:28 PM CDT | Special Weather Statement | JAN | Clay | 47 min |
| Aug 14, 7:48 PM CDT | Flash Flood Warning | JAN | Lamar | 2 hr |
| Aug 14, 7:56 PM CDT | Special Weather Statement | JAN | Clay | 49 min |
| Aug 14, 8:42 PM CDT | Special Weather Statement | JAN | Webster | 33 min |
| Aug 14, 8:43 PM CDT | Special Weather Statement | JAN | Oktibbeha | 47 min |
| Aug 14, 9:02 PM CDT | Special Weather Statement | JAN | Clarke | 43 min |
| Aug 14, 9:17 PM CDT | Special Weather Statement | JAN | Webster | 43 min |
| Aug 14, 9:26 PM CDT | Special Weather Statement | JAN | Jefferson Davis | 34 min |
| Aug 14, 9:49 PM CDT | Special Weather Statement | JAN | Clarke | 41 min |
| Aug 15, 1:28 PM CDT | Special Weather Statement | JAN | Holmes | 32 min |
| Aug 15, 3:32 PM CDT | Special Weather Statement | JAN | Madison | 43 min |
| Aug 15, 6:24 PM CDT | Flash Flood Warning | JAN | Scott, Smith | 2 hr |
Nearby
Special Weather Statements in Mississippi, 2021Every special weather statement in 2021
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.