Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 173, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jul 29, 2021, 7:04 PM CDT for Perry County, Mississippi. It was in force for 41 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
- Jul 29, 2021, 7:04 PM CDT (00:04 UTC)
- Expired
- Jul 29, 2021, 7:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Perry County, MS
The radar
The Mobile radar (KMOB), 111 km from the middle of the area, began a volume at 00:04 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 00:00Z, 0.1 hours before the alert went out and 136 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
- 1533 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1067 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
868 WUUS54 KMOB 300004 SVRMOB MSC111-300045- /O.NEW.KMOB.SV.W.0173.210730T0004Z-210730T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Mobile AL 704 PM CDT Thu Jul 29 2021 The National Weather Service in Mobile has issued a * Severe Thunderstorm Warning for... Northwestern Perry County in southeastern Mississippi... * Until 745 PM CDT. * At 704 PM CDT, a severe thunderstorm was located 4 miles east of Macedonia, or 8 miles west of Richton, moving west at 20 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will remain over mainly rural areas of northwestern Perry County. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3143 8915 3143 8900 3126 8900 3124 8915 TIME...MOT...LOC 0004Z 087DEG 17KT 3136 8909 HAIL...<.75IN WIND...60MPH $$
1 follow-up statement
619
WWUS54 KMOB 300035
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
735 PM CDT Thu Jul 29 2021
MSC111-300045-
/O.EXP.KMOB.SV.W.0173.000000T0000Z-210730T0045Z/
Perry MS-
735 PM CDT Thu Jul 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PERRY COUNTY WILL
EXPIRE AT 745 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
this thunderstorm.
LAT...LON 3143 8915 3143 8900 3126 8900 3124 8915
TIME...MOT...LOC 0035Z 087DEG 17KT 3135 8925
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 4:39 AM CDT | Excessive Heat Warning | MOB | George, Greene, Perry, Stone, Wayne | 38 hr |
| Jul 30, 4:39 AM CDT | Heat Advisory | MOB | Wayne | 29 hr |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2021Every severe thunderstorm warning 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.