Severe Thunderstorm Warning 111, NWS Birmingham, AL

092 
WWUS54 KBMX 270544
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1244 AM CDT THU APR 27 2017

ALC063-270615-
/O.CON.KBMX.SV.W.0111.000000T0000Z-170427T0615Z/
Greene AL-
1244 AM CDT THU APR 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR CENTRAL GREENE COUNTY...

At 1244 AM CDT, a severe thunderstorm was located over Allison, or
near Eutaw, moving east at 50 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...
Eutaw, Boligee, Knoxville, Allison, Walden Quarters, Five Points
Intersection, New Mount Hebron, I 20 Rest Area Near Eutaw, Eutaw
Municipal Airport and Clinton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3268 8804 3268 8805 3269 8804 3269 8805
      3278 8808 3279 8806 3280 8809 3289 8812
      3302 8777 3302 8771 3299 8771 3295 8775
      3295 8773 3286 8783 3280 8782 3276 8787
      3277 8783 3274 8781
TIME...MOT...LOC 0544Z 249DEG 45KT 3282 8798 

HAIL...1.00IN
WIND...60MPH
 
$$

87/GRANTHAM

992 
WWUS54 KBMX 270555
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1255 AM CDT THU APR 27 2017

ALC063-270615-
/O.CON.KBMX.SV.W.0111.000000T0000Z-170427T0615Z/
Greene AL-
1255 AM CDT THU APR 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR EAST CENTRAL GREENE COUNTY...

At 1255 AM CDT, a severe thunderstorm was located over Eutaw, moving
east at 45 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...
Eutaw, Walden Quarters, I 20 Rest Area Near Eutaw and Eutaw Municipal
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3272 8793 3290 8800 3302 8771 3299 8771
      3295 8775 3295 8773 3286 8783 3280 8782
      3276 8787 3277 8783 3275 8781
TIME...MOT...LOC 0555Z 249DEG 40KT 3284 8789 

HAIL...1.00IN
WIND...60MPH
 
$$

87/GRANTHAM

635 
WWUS54 KBMX 270608
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
108 AM CDT THU APR 27 2017

ALC063-270617-
/O.EXP.KBMX.SV.W.0111.000000T0000Z-170427T0615Z/
Greene AL-
108 AM CDT THU APR 27 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GREENE COUNTY
WILL EXPIRE AT 115 AM 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.

A severe thunderstorm watch remains in effect until 500 AM CDT for
west central Alabama.

LAT...LON 3272 8793 3290 8800 3302 8771 3299 8771
      3295 8775 3295 8773 3286 8783 3280 8782
      3276 8787 3277 8783 3275 8781
TIME...MOT...LOC 0607Z 249DEG 45KT 3289 8773 

$$

87/GRANTHAM

Area Forecast Discussion
National Weather Service Birmingham AL
958 PM CDT Wed Apr 26 2017

.UPDATE...
MESOSCALE UPDATE.

&&

.DISCUSSION...

Line of thunderstorms in Mississippi has changed quite a bit the
past few hours. The line has organized itself and produced wind
damage and some hail as it moved across the Mississippi River
into far western Mississippi. Since then, we are seeing the
northern part of the line break into clusters.

The upper trough is in the process of lifting northward and
additional upward motion from this feature will gradually
decrease. But enough shear to keep organized storms going for a
several hours will persist. The 00z raobs also indicate quite a
low level capping inversion. Some of the mesoscale models are
handling this pretty well as it only breaks when the pre-frontal
trough arrives. Another factor will be how high do the surface
dew points climb and how much instability will be available. It is
likely that the dew points only reach the lower 60s or so.

With all this said, there are limiting factors on how far east
this activity will hold on. We will hold the timing to about what
it is now as there will be surges and slow downs expected. The
best chance for severe weather will be west of I-65, with lesser
confidence east. With highly clockwise curved hodographs, can not
rule out a tornado especially with the southern areas of breaks in
the line and cell interaction. The main threat however will be
damaging winds and large hail. Any one area will have about a one
to two hour window of potential severe weather, if that.

75

&&

.AVIATION...
00Z TAF Discussion.

General weather trend holds this forecast cycle. The first 4-7
hours of the forecast will be VFR. But winds will become gusty as
a pre-frontal trough approaches. Showers and thunderstorms are
expected at the terminals in the 6-10 hour time frame. Have the
thunderstorms starting at 6-8z north and west and ending 15-16z
southeast. Narrowed the window somewhat but still have a 2-3 hour
window at each site. Some of the storms may be severe with the
main threat of damaging winds.

Just ahead of the pre-frontal trough, ceilings dip into MVFR
followed by IFR. After exit of thunderstorms, ceilings should rise
back to MVFR and potentially VFR before 00z.

Southeast to southwest winds will prevail the first 12 hours or so
followed by a veer to the southwest and west late in the period.

75

&&

.FIRE WEATHER...

An approaching cold front will bring a round of showers and
thunderstorms late tonight into Thursday morning. Storms will be
strong to severe with heavy rainfall. Drier conditions are
expected by Thursday afternoon, with another chance of storms
Sunday and Sunday night. There are no fire weather concerns.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     66  77  57  87  65 /  80  50   0  20  10
Anniston    64  77  60  86  67 /  80  60   0  20  10
Birmingham  66  78  63  88  69 /  80  30   0  20  10
Tuscaloosa  63  78  62  88  70 /  80  20   0  20  10
Calera      66  78  63  87  68 /  80  30   0  20  10
Auburn      66  78  66  85  68 /  50  60  10  20  10
Montgomery  68  82  67  89  68 /  80  60  10  20  10
Troy        69  82  69  88  68 /  50  60  10  10  10

&&

.BMX WATCHES/WARNINGS/ADVISORIES/...
None.

&&

Hazardous Weather Outlook
National Weather Service Birmingham AL
434 AM CDT Wed Apr 26 2017

ALZ011>015-017>050-271245-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
434 AM CDT Wed Apr 26 2017

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...Today and Tonight.

A line of strong to severe storms will move across west Alabama
after midnight. The threats include damaging winds and large hail,
but a tornado cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

A line of strong to severe storms will move across east Alabama
during the early morning hours on Thursday. The main threats will be
damaging winds and large hail, but a tornado cannot be ruled out.

There is also a threat of severe thunderstorms across all of central
Alabama Sunday afternoon and into Sunday night. The threats include
damaging winds, large hail, and tornadoes.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management may be needed
late tonight and into Thursday morning, and again Sunday into Sunday
night.