Alert archive / Mississippi / Special Weather Statements in 2017
Special Weather Statement, NWS Jackson, MS
NWS Jackson, MS issued this special weather statement at Aug 19, 2017, 3:21 PM CDT for Marion County, Mississippi. It was in force for 39 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 19, 2017, 3:21 PM CDT (20:21 UTC)
- Expired
- Aug 19, 2017, 4:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Jackson, MS
County Marion County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.4 hours before the alert went out and 99 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
- 1945 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
567
WWUS84 KJAN 192021
SPSJAN
Special Weather Statement
National Weather Service Jackson MS
321 PM CDT SAT AUG 19 2017
MSZ072-073-192100-
Lamar MS-Marion MS-
321 PM CDT SAT AUG 19 2017
...A STRONG THUNDERSTORM WILL AFFECT MARION AND SOUTHWESTERN LAMAR
COUNTIES UNTIL 400 PM CDT...
At 320 PM CDT, Meteorologists were tracking a strong thunderstorm
over Columbia, moving south at 20 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
This strong thunderstorm will be near...
Pickwick and Pinebur around 340 PM CDT.
Sandy Hook around 400 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
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 3107 8984 3107 8992 3109 8992 3109 8993
3111 8993 3111 8994 3113 8994 3113 9001
3137 8999 3138 8965 3100 8956 3100 8983
TIME...MOT...LOC 2020Z 353DEG 18KT 3122 8983
$$
ECThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 12:57 PM CDT | Special Weather Statement | JAN | Forrest | 63 min |
| Aug 19, 3:28 PM CDT | Special Weather Statement | JAN | Claiborne | 47 min |
| Aug 19, 3:52 PM CDT | Special Weather Statement | JAN | Forrest, Lamar | 38 min |
| Aug 19, 3:57 PM CDT | Severe Thunderstorm Warning | JAN | Warren | 32 min |
| Aug 19, 4:28 PM CDT | Special Weather Statement | JAN | Forrest, Lamar | 47 min |
| Aug 19, 4:42 PM CDT | Special Weather Statement | JAN | Copiah | 63 min |
| Aug 19, 5:10 PM CDT | Special Weather Statement | JAN | Forrest | 35 min |
| Aug 19, 5:47 PM CDT | Special Weather Statement | JAN | Jasper | 58 min |
| Aug 19, 5:54 PM CDT | Severe Thunderstorm Warning | JAN | Jasper, Smith | 34 min |
| Aug 19, 6:08 PM CDT | Special Weather Statement | JAN | Franklin | 67 min |
| Aug 19, 4:37 PM CDT | Special Weather Statement | JAN | Richland | 53 min |
| Aug 18, 8:23 PM CDT | Special Weather Statement | JAN | Chicot | 52 min |
Nearby
Special Weather Statements in Mississippi, 2017Every special weather statement in 2017
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.