Alert archive / Mississippi / Special Weather Statements in 2011
Special Weather Statement, NWS Jackson, MS
NWS Jackson, MS issued this special weather statement at Aug 21, 2011, 3:21 PM CDT for Covington County, Mississippi. It was in force for 44 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 21, 2011, 3:21 PM CDT (20:21 UTC)
- Expired
- Aug 21, 2011, 4:05 PM CDT
- In force
- 44 min
- Issued by
- NWS Jackson, MS
County Covington County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 88 km from the middle of the area, began a volume at 20:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 21, 3:35 PM CDT | TSTM WND DMG | Collins, MS | TREE DOWN BLOCKING A RAILROAD TRACK IN COLLINS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 8.4 hours before the alert went out and 98 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
- 2198 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 906 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
122 WWUS84 KJAN 212021 SPSJAN MSZ056-057-065-066-212105- SMITH MS-JONES MS-JASPER MS-COVINGTON MS- 321 PM CDT SUN AUG 21 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 321 PM CDT SUN AUG 21 2011 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND 40 TO 50 MPH WINDS WAS LOCATED 3 MILES SOUTHWEST OF TAYLORSVILLE AT 322 PM CDT...MOVING SOUTH AT 15 MPH. PEOPLE IN NORTHEASTERN COVINGTON...SOUTHWESTERN JASPER...NORTHWESTERN JONES AND SOUTHEASTERN SMITH COUNTIES SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3156 8918 3157 8962 3186 8964 3186 8922 TIME...MOT...LOC 2022Z 356DEG 13KT 3180 8948 $$ MME
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 1:56 PM CDT | Special Weather Statement | JAN | Clarke | 39 min |
| Aug 21, 2:00 PM CDT | Severe Thunderstorm Warning | JAN | Jasper, Smith | 60 min |
| Aug 21, 2:27 PM CDT | Special Weather Statement | JAN | Covington | 28 min |
| Aug 21, 3:24 PM CDT | Special Weather Statement | JAN | Simpson | 46 min |
| Aug 21, 3:27 PM CDT | Severe Thunderstorm Warning | JAN | Covington | 33 min |
| Aug 21, 4:06 PM CDT | Special Weather Statement | JAN | Newton | 44 min |
| Aug 21, 4:49 PM CDT | Special Weather Statement | JAN | Hinds | 41 min |
| Aug 21, 5:47 PM CDT | Special Weather Statement | JAN | Leake | 43 min |
| Aug 21, 6:02 PM CDT | Special Weather Statement | JAN | Forrest | 43 min |
| Aug 21, 6:17 PM CDT | Special Weather Statement | JAN | Neshoba | 43 min |
| Aug 20, 7:39 PM CDT | Special Weather Statement | JAN | Franklin | 31 min |
| Aug 21, 2:47 PM CDT | Special Weather Statement | JAN | Morehouse | 63 min |
| Aug 21, 3:14 PM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 61 min |
| Aug 21, 3:42 PM CDT | Flash Flood Warning | JAN | Morehouse | 59 min |
| Aug 21, 3:47 PM CDT | Special Weather Statement | JAN | East Carroll | 43 min |
| Aug 21, 3:18 PM CDT | Severe Thunderstorm Warning | JAN | Ashley | 57 min |
| Aug 21, 4:14 PM CDT | Severe Thunderstorm Warning | JAN | Ashley | 31 min |
Nearby
Special Weather Statements in Mississippi, 2011Every special weather statement in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.