Wind Advisory 8, NWS Huntsville, AL

731 
WWUS74 KHUN 110923
NPWHUN

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
423 AM CDT Mon Sep 11 2017

...The Remnants of Hurricane Irma Expected to Impact Much of the
Tennessee Valley Monday into Tuesday...

.Hurricane Irma will continue to move northward out of the
Florida panhandle and into western Georgia late Sunday and into
Monday. The storm is expected to weaken to a tropical depression 
as it begins to move northwest across northern Alabama and into 
western Tennessee. Wind speeds are expected to increase into the 
20 to 25 MPH range with gusts to 40 to 45 MPH at times, as the 
remnant tropical system passes to the northwest.

ALZ006>010-016-111730-
/O.EXB.KHUN.WI.Y.0008.170911T2000Z-170912T0900Z/
Madison-Morgan-Marshall-Jackson-De Kalb-Cullman-
Including the cities of Huntsville, Decatur, Albertville, Boaz, 
Guntersville, Arab, Scottsboro, Fort Payne, Rainsville, 
and Cullman
423 AM CDT Mon Sep 11 2017

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 4 AM CDT
TUESDAY...

The National Weather Service in Huntsville has issued a Wind
Advisory, which is in effect from 3 PM this afternoon to 4 AM CDT
Tuesday. 

* TIMING AND AREAS AFFECTED...In northeast Alabama and southern
  middle Tennessee including Madison, Morgan, Marshall, Jackson,
  DeKalb, and Cullman counties in Alabama. 

* WINDS...Wind speeds are expected to increase into the 20 to 25 
  MPH range with gusts to 35 MPH at times. Winds may actually 
  gusts closer to 40 to 45 MPH in the higher elevations. 

* IMPACTS...These high winds may knock down large branches along 
  with small trees and perhaps some power lines. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of at least
25 mph, or gusts of at least 35 mph, are expected across the
affected area. Winds this strong can make driving difficult,
especially for high profile vehicles. Use extra caution. In
addition, ensure all loose outdoor objects remain secure,
including patio furniture and trash cans.

&&

$$

ALZ001>005-TNZ076-096-097-111730-
/O.EXT.KHUN.WI.Y.0008.170911T2000Z-170912T0900Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Moore-Lincoln-
Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield, 
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens, 
Lynchburg, Fayetteville, Winchester, Sewanee, Decherd, 
Estill Springs, and Cowan
423 AM CDT Mon Sep 11 2017

...WIND ADVISORY NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO 4 AM
CDT TUESDAY...

* TIMING AND AREAS AFFECTED...This afternoon through 4 AM CDT
  Tuesday. In northwest Alabama, this includes, Colbert, Franklin,
  Lauderdale, Lawrence and Limestone counties. In southern middle
  Tennessee, this includes, Franklin, Lincoln and Moore counties. 

* WINDS...Wind speeds are expected to increase into the 20 to 25 
  MPH range with gusts to 35 MPH at times. Winds may actually 
  gusts closer to 40 to 45 MPH in the higher elevations. 

* IMPACTS...These high winds may knock down large branches along 
  with small trees and perhaps some power lines. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of at least
25 mph, or gusts of at least 35 mph, are expected across the
affected area. Winds this strong can make driving difficult,
especially for high profile vehicles. Use extra caution. In
addition, ensure all loose outdoor objects remain secure,
including patio furniture and trash cans.

&&

$$

797 
WWUS74 KHUN 111746
NPWHUN

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
1246 PM CDT Mon Sep 11 2017

...The Remnants of Hurricane Irma Expected to Impact Much of the
Tennessee Valley today into Tuesday...

ALZ001>010-016-TNZ076-096-097-120900-
/O.CON.KHUN.WI.Y.0008.170911T2000Z-170912T0900Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield, 
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens, 
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab, 
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg, 
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs, 
and Cowan
1246 PM CDT Mon Sep 11 2017

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON UNTIL 4 AM 
CDT TUESDAY...

* TIMING AND AREAS AFFECTED...this afternoon through 4 AM Tuesday for
  all counties in northern Alabama and southern middle Tennessee.
 
* WINDS...Wind speeds are expected to increase into the 20 to 25
  MPH range with gusts to 35 MPH at times. Winds may actually gust 
  closer to 40 to 45 MPH in the higher elevations. 

* IMPACTS...These high winds may knock down large branches along 
  with small trees and perhaps some power lines. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of at least
25 mph, or gusts of at least 35 mph, are expected across the
affected area. Winds this strong can make driving difficult,
especially for high profile vehicles. Use extra caution. In
addition, ensure all loose outdoor objects remain secure,
including patio furniture and trash cans.

&&

$$

812 
WWUS74 KHUN 120205
NPWHUN

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
905 PM CDT Mon Sep 11 2017

...The Remnants of Tropical Storm Irma Will Continue to Impact 
the Tennessee Valley Into the Early Morning Hours Tuesday...

ALZ001>010-016-TNZ076-096-097-120900-
/O.CON.KHUN.WI.Y.0008.000000T0000Z-170912T0900Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield, 
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens, 
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab, 
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg, 
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs, 
and Cowan
905 PM CDT Mon Sep 11 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY...

* TIMING AND AREAS AFFECTED...For all counties in northern 
  Alabama and southern middle Tennessee through 4 AM CDT Tuesday.

* WINDS...Wind speeds will range from 20 to 25 MPH with gusts 
  around 30 to 40 MPH at times. Winds may actually gust closer to 
  45 MPH in the higher elevations. 

* IMPACTS...These high winds may be capable of knocking down large
  branches along with small trees and perhaps some power lines.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that sustained wind speeds of at least 25 
mph, or gusts of at least 35 mph, are expected across the affected
area. Winds this strong can make driving difficult, especially 
for high profile vehicles. Use extra caution. In addition, ensure 
all loose outdoor objects remain secure, including patio furniture
and trash cans.

&&

$$

319 
WWUS74 KHUN 120847
NPWHUN

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
347 AM CDT Tue Sep 12 2017


ALZ001>010-016-TNZ076-096-097-121000-
/O.EXP.KHUN.WI.Y.0008.000000T0000Z-170912T0900Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield, 
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens, 
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab, 
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg, 
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs, 
and Cowan
347 AM CDT Tue Sep 12 2017

...WIND ADVISORY WILL EXPIRE AT 4 AM CDT EARLY THIS MORNING...

North to northeast winds will gust briefly around 20 to 25 mph
early this morning, but diminish through the late morning hours 
into the 5 to 15 mph range.

$$

Area Forecast Discussion
National Weather Service Huntsville AL
706 PM CDT Sun Sep 10 2017

.UPDATE...
For 00Z TAFS.

&&

.NEAR TERM...(Tonight)
Issued at 321 PM CDT Sun Sep 10 2017

As was alluded to in the public forecast update earlier this morning,
the Tennessee Valley is anxiously awaiting the eventual track of
Hurricane Irma over the next 24 hours, and it's impact on our local
area. Tonight will be uneventful, compared to this time tomorrow when
things really get going as Irma encroaches and the pressure gradient
tightens significantly.

Aside from what's expected tomorrow, the trend for tonight will be
increasing clouds from the SE, as well as winds increasing by
daybreak. Sustained winds of 10-15mph will be likely by sunrise, with
gusts up to 20-25mph possible, especially in the SE locations like
Marshall/Dekalb Counties. Morning lows will fall into the middle 50s
in most locations, with a few spots in Srn Middle TN falling into the
lower 50s. No rain will impact the area prior to 12Z, but it may
shortly thereafter in those far SE locations.

.SHORT TERM...(Monday through Wednesday - remnants of Irma)
Issued at 321 PM CDT Sun Sep 10 2017

For the first time in a long time, portions of Northern Alabama and
Southern Middle TN are included in a Tropical Storm Watch. Generally
all counties along/E of I-65 (with the exception of Limestone County)
are included in this product, and the last time we issued one was
back in 2005 for both Hurricanes Dennis and Katrina. So while it's
not the first time it's ever happened, it's still generally rare to
have such a product out this far inland.

The eye of Hurricane Irma has pushed N of the FL Keys attm this aftn,
and is making landfall on the far SW coast near Marco Island, which
is just south of Naples, FL. The track from there takes Irma up the W
Coast, and affecting Tallahassee before pushing/turning NW and
moving into SW GA still at Tropical Storm strength by
tomorrow/Monday night. From there, Irma is forecast by the National
Hurricane Center to be downgraded to a Tropical Depression somewhere
between Cullman/Birmingham, with the center of the associated sfc low
over NW AL~12Z Tuesday. The remnants of Irma will continue on a NW
track across the area, eventually ending up in NW TN by Wednesday
morning, and on into the OH River Valley Wednesday afternoon.

The forecast during this time is basically for strong winds and heavy
rain beginning Monday afternoon after 18Z. Conditions will rapidly
deteriorate across our area after this timeframe, with the
worst/highest wind gusts occurring overnight Monday into Tuesday.
Sustained winds during this time of 30-40mph are likely in the
Tropical Storm Watch areas, with sustained winds approaching 20mph W
of Interstate 65. Wind gusts during this time will be considerably
higher, with 50-60mph gusts possible in the Tropical Storm Watch
areas, and gusts up to 30-35mph possible for areas W of Interstate
65.

For once, brief spin-up tornadoes *are not* expected to be a threat
with this decaying tropical system, so if there's any good news about
this, that's definitely it. With the current airmass in place being
much drier (compared to a more typical moist summertime airmass),
instability will be hard to come by. Shear is readily available, but
given the time of arrival, think the tornado threat is as low as it
could possibly be.

Aside from any damage we incur from the windfield across the area,
heavy rainfall is the secondary threat. Rainfall totals of two inches
(NW AL) to three inches (upwards of 4" in a few spots in NE AL) will
be a concern, but widespread flooding is not expected. A few
instances of flash flooding are definitely possible, but the storm
itself will be moving fast enough to alleviate much in the way of a
flood threat. As such, a Flood or Flash Flood Watch will not be
issued.

As the pressure gradient relaxes across the area Tuesday as the
remnants of Irma, wind speeds will slacken significantly after
midday. By sunset Tuesday, sustained winds of 10-15mph will linger,
gusting to 20mph at times. This will quickly fall below 10mph by
midnight, making for much more quiet winds compared to 24-hours
prior.

Rain chances linger in our forecast for Wednesday and Thursday as
Irma's remnants traverse the OH Valley, but rainfall totals will be
much lighter, by comparison. Values around or less than half an inch
are expected for these 2 days.

Temps during Irma's passage on Monday/Tuesday will be in the middle
to upper 60s, with overnight lows around 60. Otherwise, daytime highs
Wednesday/Thursday will be around 70/upper 70s, respectively, with
overnight lows between 55-60F.

.LONG TERM...(Wednesday night through Saturday)
Issued at 321 PM CDT Sun Sep 10 2017

Given the attention spent on the short-term portion of the forecast,
there's not much to really speak of in the extended once the remnants
of Irma finally vacate the Southeast. Rain chances are finally
removed from the forecast by Thursday, with a dry weekend in store
for the area. Longer-range models hint at more showers
developing/moving into the area by early next week, and with the area
in NW flow aloft, this isn't completely out of the question. Will
maintain a dry forecast for now, with daytime highs in the upper 70s
Thursday giving way to the middle 80s by Sunday. Morning lows will
moderate through the extended as well, starting out in the upper 50s
Thursday morning and slowly climbing into the lower/middle 60s by
Sunday morning.

Hurricane Jose will not impact wx in the TN Valley in the
extended, with it's track expected to keep it offshore of the E
Coast. We won't entertain the GFS output this afternoon, with a
landfall in Maine. It's had various landfall points in days past, and
there hasn't been any run-to-run consistency, so little faith is put
in it's output.

&&

.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 706 PM CDT Sun Sep 10 2017

With high pressure over the Great Plains/mid Atlantic continuing to
drift newd, VFR conds are xpcted into the morning hrs Mon. Mid/high
cloud cover will then begin to stream into the area from the E, as
the remnants of Hurricane Irma begin to move nwwd across GA. Sfc
winds out of the NE will also be increasing near 20KT with gusts
around 30KT tomorrow afternoon, as the system moves across the area.
Periods of ra/shra will be developing with the passing system during
the day Mon as well, with some possible reductions in cigs/vis.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...Tropical Storm Watch for ALZ006>010-016.

TN...Tropical Storm Watch for TNZ076-096-097.

&&

NEAR TERM...12
SHORT TERM...12
LONG TERM...12
AVIATION...09

For more information please visit our website
at weather.gov/huntsville.

Hazardous Weather Outlook
National Weather Service Huntsville AL
240 PM CDT Sun Sep 10 2017

ALZ001>010-016-TNZ076-096-097-111100-
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN-
240 PM CDT Sun Sep 10 2017

This Hazardous Weather Outlook is for north Alabama and portions of
southern middle Tennessee.

.DAY ONE...Tonight...

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

Tropical storm conditions are possible Monday Night into early
Tuesday morning, mainly for areas east of I-65 as Irma tracks
into central and northwest Alabama. A Tropical Storm Watch is in
effect for these locations.  Periods of rain will be accompanied by
windy conditions. North to northeast winds of 25 to 35 mph will gust
over 40 mph. In the higher elevations, gusts of around 50 mph will
be possible Monday Night. West of I-65, it will be breezy, but wind
speeds and gusts will be somewhat lower. Rainfall totals of 2 to 3
inches are expected, with locally higher amounts over 4 inches possible.

The remnants of Irma will have shifted northwest of the area by late
Wednesday into Thursday.

.SPOTTER CALL TO ACTION STATEMENT...

Activation of storm spotters and emergency management personnel is
not anticipated at this time.