Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 96, NWS Mobile, AL

March 27, 2017Choctaw County, Washington County, Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Mar 27, 2017, 7:57 PM CDT for Choctaw County, Washington County, Alabama; Wayne County, Mississippi. It was in force for 48 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
Mar 27, 2017, 7:57 PM CDT (00:57 UTC)
Expired
Mar 27, 2017, 8:45 PM CDT
In force
48 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Choctaw County, AL, Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 111 km from the middle of the area, began a volume at 01:00 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

Jackson, MS (KJAN), launched 00:00Z, 1.0 hours before the alert went out and 164 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.

Skew-T log-pSkew-T log-p diagram, Jackson, MS at 00:00Z on 2017-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1116 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 2017-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1116 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
771 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.2

Open this sounding in Storm Lab

The text

As transmitted.

108 
WUUS54 KMOB 280057
SVRMOB
ALC023-129-MSC153-280145-
/O.NEW.KMOB.SV.W.0096.170328T0057Z-170328T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
757 PM CDT MON MAR 27 2017

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southwestern Choctaw County in southwestern Alabama...
  Northwestern Washington County in southwestern Alabama...
  East central Wayne County in southeastern Mississippi...

* Until 845 PM CDT

* At 757 PM CDT, a severe thunderstorm was located near Waynesboro,
  moving east at 20 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Waynesboro and Millry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3162 8868 3177 8866 3173 8827 3151 8834
TIME...MOT...LOC 0057Z 285DEG 19KT 3170 8858 

HAIL...1.25IN
WIND...60MPH
 
$$
3 follow-up statements
761 
WWUS54 KMOB 280114
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
814 PM CDT MON MAR 27 2017

ALC023-129-MSC153-280145-
/O.CON.KMOB.SV.W.0096.000000T0000Z-170328T0145Z/
Choctaw AL-Washington AL-Wayne MS-
814 PM CDT MON MAR 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN CHOCTAW...NORTHWESTERN WASHINGTON AND EAST CENTRAL
WAYNE COUNTIES...

At 813 PM CDT, a severe thunderstorm was located 8 miles east of
Waynesboro, moving east at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Millry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3160 8862 3176 8860 3173 8827 3151 8834
TIME...MOT...LOC 0113Z 287DEG 18KT 3167 8849 

HAIL...1.25IN
WIND...60MPH
 
$$
034 
WWUS54 KMOB 280133
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
833 PM CDT MON MAR 27 2017

MSC153-280142-
/O.CAN.KMOB.SV.W.0096.000000T0000Z-170328T0145Z/
Wayne MS-
833 PM CDT MON MAR 27 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WAYNE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
Wayne County. Therefore, the warning has been cancelled.

LAT...LON 3173 8827 3153 8833 3155 8846 3175 8846
TIME...MOT...LOC 0132Z 283DEG 18KT 3166 8841 

$$

ALC023-129-280145-
/O.CON.KMOB.SV.W.0096.000000T0000Z-170328T0145Z/
Choctaw AL-Washington AL-
833 PM CDT MON MAR 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN CHOCTAW AND NORTHWESTERN WASHINGTON COUNTIES...

At 832 PM CDT, a severe thunderstorm was located just west of 
Millry, or 14 miles east of Waynesboro, moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Millry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3173 8827 3153 8833 3155 8846 3175 8846
TIME...MOT...LOC 0132Z 283DEG 18KT 3166 8841 

HAIL...1.00IN
WIND...60MPH
 
$$
946 
WWUS54 KMOB 280142
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
842 PM CDT MON MAR 27 2017

ALC023-129-280152-
/O.EXP.KMOB.SV.W.0096.000000T0000Z-170328T0145Z/
Choctaw AL-Washington AL-
842 PM CDT MON MAR 27 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHOCTAW AND
NORTHWESTERN WASHINGTON COUNTIES WILL EXPIRE AT 845 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits. Therefore the warning will be allowed to expire.

LAT...LON 3173 8827 3153 8833 3155 8846 3175 8846
TIME...MOT...LOC 0142Z 285DEG 19KT 3165 8837 

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 27, 7:11 PM CDTSevere Thunderstorm WarningMOBWayne49 min
Mar 27, 7:38 PM CDTSevere Thunderstorm WarningMOBWayne22 min
Mar 27, 8:15 PM CDTSpecial Weather StatementMOBWayne60 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2017Severe Thunderstorm Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.