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Alabama, Bibb

Public Information Statement

Statement as of 8:39 PM CST on January 23, 2017

Expires 9:45 AM EST on January 24, 2017


... NWS damage surveys Thursday 1/19 through Sunday 1/22...
... Storm survey plan of the day for Tuesday 1/24...

.Overview...

A deepening upper low sent several impulses over central Alabama
Thursday through Sunday. Each impulse was able to pull moisture
northward and into central Alabama. Conditions became unstable as
the moisture, warm surface conditions, cold upper level conditions,
and wind shear combined to initiate severe thunderstorms. Numerous
storms developed in association with each wave. The southern half
of central Alabama was most impacted. Tornadoes, damaging winds,
some hail, and localized flooding occurred. The events below are
from the Thursday through Sunday timeframe.

Storm survey plan of the day for Tuesday January 24:

At this time, storm surveys are being planned for the following
counties:

Team one: primary targets: Chambers and Lee County

Team two: primary targets: Tallapoosa and Elmore counties

Team three: primary targets: Tuscaloosa and Blount counties


... Treasure Island tornado (st. Clair)... Thursday 1/19

Rating: EF-1
estimated peak wind: 90 mph
path length (statute): 0.7 miles
path width (maximum): 175 yards
fatalities: 0
injuries: 0

Start date: Jan 19 2017
start time: 558 PM CST
start location: 2 ENE Coosa island
start lat/lon: 33.4785 / -86.3045

End date: Jan 19 2017
end time: 600 PM CST
end location: 5 SSW Pell City
end lat/lon: 33.4877 / -86.3025

Survey summary:

A persistent mesocyclone spun up a brief weak tornado within a
line of thunderstorms as it passed through St Clair County. The
tornado touched down on Logan Martin Lake just south of the
Eastern Shore of Treasure Island. The tornado tracked northward
parallel to and just off the shores of the island, with the initial
damage pointing largely offshore. Four boathouses were destroyed
and a few trees were snapped or uprooted here, but the path of the
tornado was far enough offshore so as not to cause any structural
damage to the homes another 50 to 100 feet further inland. As the
tornado continued northward across a large Cove, it remained
completely over water. As it approached the northeastern tip of
the island, which jutted out into the lake, the tornado came ashore
again and peeled metal roofing off a well-built boathouse. The
tornado reached maximum strength here, with 10 large Hardwood trees
uprooted in a concentrated area in a convergent pattern. The
tornado passed offshore again and dissipated before reaching the
opposite point on the lake.

... Troy/Louisville tornado (pike & Barbour counties)... 1/21

Rating: EF-1
estimated peak wind: 90 mph
path length (statute):37.47 miles
path width (maximum):400 yards
fatalities: 0
injuries:0

Start date: Jan 21 2017
start time:855 am CST
start location: 5 N Goshen
start lat/lon:31.7870 / -86.1345

End date: Jan 21 2017
end time: 938 am CST
end location: 3 E Louisville
end lat/lon: 31.7882 / -85.4987

Survey summary:

A long-lived tornado touched down along CR 1107, about 5 miles
north of Goshen. The tornado traveled almost due east and produced
mostly EF0 damage to near Troy. One Grove of trees sustained EF1
damage in southeast Troy while the remainder of the damage was
relatively light. The tornado continued eastward. South of banks,
the tornado again produced EF1 damage and the strongest winds.
Just south of CR 18, a Mobile home suffered significant damage.
The two occupants were uninjured as they took shelter after
hearing about the warning. The tornado proceeded east where it
downed tress and caused minor roof damage. The tornado lifted just
east of Louisville off of carroway Road. The tornado damage width
was mainly under 100 yards except at the two higher damage
locations.


Ef scale: the Enhanced Fujita scale classifies
tornadoes into the following categories.

EF0... weak... ... 65 to 85 mph
EF1... weak... ... 86 to 110 mph
EF2... strong... .111 to 135 mph
EF3... strong... .136 to 165 mph
EF4... violent... 166 to 200 mph
EF5... violent... >200 mph

Note:
the information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
storm data. Also as tornadoes are added, the subsequent number may
change to keep in chronological order.

Additional public information statements will be issued periodically
through the day, as survey teams report back their findings. For
media concerns please contact the NWS Birmingham office and we
will get you in touch with the teams.

A major contribution to the Success of our severe weather warning
program is the receipt of storm reports from all our customers and
partners. If you witnessed or are aware of any storm damage due to
high winds or tornadoes, please contact your local emergency
management office. You can also report severe weather by using
#bmxwx on twitter.



839 PM CST Mon Jan 23 2017

... NWS damage surveys Thursday 1/19 through Sunday 1/22...
... Storm survey plan of the day for Tuesday 1/24...

.Overview...

A deepening upper low sent several impulses over central Alabama
Thursday through Sunday. Each impulse was able to pull moisture
northward and into central Alabama. Conditions became unstable as
the moisture, warm surface conditions, cold upper level conditions,
and wind shear combined to initiate severe thunderstorms. Numerous
storms developed in association with each wave. The southern half
of central Alabama was most impacted. Tornadoes, damaging winds,
some hail, and localized flooding occurred. The events below are
from the Thursday through Sunday timeframe.

Storm survey plan of the day for Tuesday January 24:

At this time, storm surveys are being planned for the following
counties:

Team one: primary targets: Chambers and Lee County

Team two: primary targets: Tallapoosa and Elmore counties

Team three: primary targets: Tuscaloosa and Blount counties


... Treasure Island tornado (st. Clair)... Thursday 1/19

Rating: EF-1
estimated peak wind: 90 mph
path length (statute): 0.7 miles
path width (maximum): 175 yards
fatalities: 0
injuries: 0

Start date: Jan 19 2017
start time: 558 PM CST
start location: 2 ENE Coosa island
start lat/lon: 33.4785 / -86.3045

End date: Jan 19 2017
end time: 600 PM CST
end location: 5 SSW Pell City
end lat/lon: 33.4877 / -86.3025

Survey summary:

A persistent mesocyclone spun up a brief weak tornado within a
line of thunderstorms as it passed through St Clair County. The
tornado touched down on Logan Martin Lake just south of the
Eastern Shore of Treasure Island. The tornado tracked northward
parallel to and just off the shores of the island, with the initial
damage pointing largely offshore. Four boathouses were destroyed
and a few trees were snapped or uprooted here, but the path of the
tornado was far enough offshore so as not to cause any structural
damage to the homes another 50 to 100 feet further inland. As the
tornado continued northward across a large Cove, it remained
completely over water. As it approached the northeastern tip of
the island, which jutted out into the lake, the tornado came ashore
again and peeled metal roofing off a well-built boathouse. The
tornado reached maximum strength here, with 10 large Hardwood trees
uprooted in a concentrated area in a convergent pattern. The
tornado passed offshore again and dissipated before reaching the
opposite point on the lake.

... Troy/Louisville tornado (pike & Barbour counties)... 1/21

Rating: EF-1
estimated peak wind: 90 mph
path length (statute):37.47 miles
path width (maximum):400 yards
fatalities: 0
injuries:0

Start date: Jan 21 2017
start time:855 am CST
start location: 5 N Goshen
start lat/lon:31.7870 / -86.1345

End date: Jan 21 2017
end time: 938 am CST
end location: 3 E Louisville
end lat/lon: 31.7882 / -85.4987

Survey summary:

A long-lived tornado touched down along CR 1107, about 5 miles
north of Goshen. The tornado traveled almost due east and produced
mostly EF0 damage to near Troy. One Grove of trees sustained EF1
damage in southeast Troy while the remainder of the damage was
relatively light. The tornado continued eastward. South of banks,
the tornado again produced EF1 damage and the strongest winds.
Just south of CR 18, a Mobile home suffered significant damage.
The two occupants were uninjured as they took shelter after
hearing about the warning. The tornado proceeded east where it
downed tress and caused minor roof damage. The tornado lifted just
east of Louisville off of carroway Road. The tornado damage width
was mainly under 100 yards except at the two higher damage
locations.


Ef scale: the Enhanced Fujita scale classifies
tornadoes into the following categories.

EF0... weak... ... 65 to 85 mph
EF1... weak... ... 86 to 110 mph
EF2... strong... .111 to 135 mph
EF3... strong... .136 to 165 mph
EF4... violent... 166 to 200 mph
EF5... violent... >200 mph

Note:
the information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
storm data. Also as tornadoes are added, the subsequent number may
change to keep in chronological order.

Additional public information statements will be issued periodically
through the day, as survey teams report back their findings. For
media concerns please contact the NWS Birmingham office and we
will get you in touch with the teams.

A major contribution to the Success of our severe weather warning
program is the receipt of storm reports from all our customers and
partners. If you witnessed or are aware of any storm damage due to
high winds or tornadoes, please contact your local emergency
management office. You can also report severe weather by using
#bmxwx on twitter.


839 PM CST Mon Jan 23 2017

... NWS damage surveys Thursday 1/19 through Sunday 1/22...
... Storm survey plan of the day for Tuesday 1/24...

.Overview...

A deepening upper low sent several impulses over central Alabama
Thursday through Sunday. Each impulse was able to pull moisture
northward and into central Alabama. Conditions became unstable as
the moisture, warm surface conditions, cold upper level conditions,
and wind shear combined to initiate severe thunderstorms. Numerous
storms developed in association with each wave. The southern half
of central Alabama was most impacted. Tornadoes, damaging winds,
some hail, and localized flooding occurred. The events below are
from the Thursday through Sunday timeframe.

Storm survey plan of the day for Tuesday January 24:

At this time, storm surveys are being planned for the following
counties:

Team one: primary targets: Chambers and Lee County

Team two: primary targets: Tallapoosa and Elmore counties

Team three: primary targets: Tuscaloosa and Blount counties


... Treasure Island tornado (st. Clair)... Thursday 1/19

Rating: EF-1
estimated peak wind: 90 mph
path length (statute): 0.7 miles
path width (maximum): 175 yards
fatalities: 0
injuries: 0

Start date: Jan 19 2017
start time: 558 PM CST
start location: 2 ENE Coosa island
start lat/lon: 33.4785 / -86.3045

End date: Jan 19 2017
end time: 600 PM CST
end location: 5 SSW Pell City
end lat/lon: 33.4877 / -86.3025

Survey summary:

A persistent mesocyclone spun up a brief weak tornado within a
line of thunderstorms as it passed through St Clair County. The
tornado touched down on Logan Martin Lake just south of the
Eastern Shore of Treasure Island. The tornado tracked northward
parallel to and just off the shores of the island, with the initial
damage pointing largely offshore. Four boathouses were destroyed
and a few trees were snapped or uprooted here, but the path of the
tornado was far enough offshore so as not to cause any structural
damage to the homes another 50 to 100 feet further inland. As the
tornado continued northward across a large Cove, it remained
completely over water. As it approached the northeastern tip of
the island, which jutted out into the lake, the tornado came ashore
again and peeled metal roofing off a well-built boathouse. The
tornado reached maximum strength here, with 10 large Hardwood trees
uprooted in a concentrated area in a convergent pattern. The
tornado passed offshore again and dissipated before reaching the
opposite point on the lake.

... Troy/Louisville tornado (pike & Barbour counties)... 1/21

Rating: EF-1
estimated peak wind: 90 mph
path length (statute):37.47 miles
path width (maximum):400 yards
fatalities: 0
injuries:0

Start date: Jan 21 2017
start time:855 am CST
start location: 5 N Goshen
start lat/lon:31.7870 / -86.1345

End date: Jan 21 2017
end time: 938 am CST
end location: 3 E Louisville
end lat/lon: 31.7882 / -85.4987

Survey summary:

A long-lived tornado touched down along CR 1107, about 5 miles
north of Goshen. The tornado traveled almost due east and produced
mostly EF0 damage to near Troy. One Grove of trees sustained EF1
damage in southeast Troy while the remainder of the damage was
relatively light. The tornado continued eastward. South of banks,
the tornado again produced EF1 damage and the strongest winds.
Just south of CR 18, a Mobile home suffered significant damage.
The two occupants were uninjured as they took shelter after
hearing about the warning. The tornado proceeded east where it
downed tress and caused minor roof damage. The tornado lifted just
east of Louisville off of carroway Road. The tornado damage width
was mainly under 100 yards except at the two higher damage
locations.


Ef scale: the Enhanced Fujita scale classifies
tornadoes into the following categories.

EF0... weak... ... 65 to 85 mph
EF1... weak... ... 86 to 110 mph
EF2... strong... .111 to 135 mph
EF3... strong... .136 to 165 mph
EF4... violent... 166 to 200 mph
EF5... violent... >200 mph

Note:
the information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
storm data. Also as tornadoes are added, the subsequent number may
change to keep in chronological order.

Additional public information statements will be issued periodically
through the day, as survey teams report back their findings. For
media concerns please contact the NWS Birmingham office and we
will get you in touch with the teams.

A major contribution to the Success of our severe weather warning
program is the receipt of storm reports from all our customers and
partners. If you witnessed or are aware of any storm damage due to
high winds or tornadoes, please contact your local emergency
management office. You can also report severe weather by using
#bmxwx on twitter.



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