Alert archive / Alabama / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 199, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jul 13, 2017, 4:52 PM CDT for Covington County, Crenshaw County, Alabama. It was in force for 38 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
- Jul 13, 2017, 4:52 PM CDT (21:52 UTC)
- Expired
- Jul 13, 2017, 5:30 PM CDT
- In force
- 38 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Covington County, AL, Crenshaw County, AL
The radar
The Ft Rucker radar (KEOX), 71 km from the middle of the area, began a volume at 21:54 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 |
|---|---|---|---|
| Jul 13, 5:00 PM CDT | TSTM WND DMG | 1 N Opp, AL | SEVERAL TREES DOWN ALONG HIGHWAY 331 IN OPP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 9.9 hours before the alert went out and 201 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
- 1081 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 720 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
748
WUUS54 KMOB 132152
SVRMOB
ALC039-041-132230-
/O.NEW.KMOB.SV.W.0199.170713T2152Z-170713T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
452 PM CDT THU JUL 13 2017
The National Weather Service in Mobile has issued a
* Severe Thunderstorm Warning for...
Southeastern Crenshaw County in south central Alabama...
Northeastern Covington County in south central Alabama...
* Until 530 PM CDT
* At 452 PM CDT, a severe thunderstorm was located near Opp, moving
north at 15 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Opp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3153 8616 3153 8620 3119 8619 3117 8624
3145 8644 3155 8615 3154 8615
TIME...MOT...LOC 2152Z 158DEG 12KT 3128 8619
HAIL...0.88IN
WIND...60MPH
$$1 follow-up statement
548
WWUS54 KMOB 132205
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
505 PM CDT THU JUL 13 2017
ALC039-041-132230-
/O.CON.KMOB.SV.W.0199.000000T0000Z-170713T2230Z/
Crenshaw AL-Covington AL-
505 PM CDT THU JUL 13 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR SOUTHEASTERN CRENSHAW AND NORTHEASTERN COVINGTON COUNTIES...
At 505 PM CDT, a severe thunderstorm was located over Opp, moving
northwest at 15 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Opp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3153 8616 3153 8620 3125 8619 3122 8625
3145 8644 3155 8615 3154 8615
TIME...MOT...LOC 2205Z 151DEG 13KT 3132 8623
HAIL...0.88IN
WIND...60MPH
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 2:02 PM CDT | Special Marine Warning | MOB | 43 min | |
| Jul 13, 2:42 PM CDT | Special Marine Warning | MOB | 48 min | |
| Jul 13, 4:40 PM CDT | Special Weather Statement | MOB | Covington | 50 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2017Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.