Fort Smith, Arkansas

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
Crawford County in northwest Arkansas
southern Franklin County in west central Arkansas
northeastern Sebastian County in west central Arkansas

* until 115 PM CDT

* at 1221 PM CDT... National Weather Service Doppler radar indicated a
severe thunderstorm capable of producing penny size hail and winds
to 60 mph. This storm was located near Rudy... moving southeast at
20 mph.

* Some locations near the path of this storm include...
Mountainburg... Alma... Dyer... Mulberry... Wiederkehr Village... branch
and Ozark.

Precautionary/preparedness actions...

Stay indoors and away from windows until the storm has passed.


Lat... Lon 3531 9387 3531 9391 3527 9390 3526 9391
      3553 9441 3575 9424 3549 9373
time... Mot... loc 1722z 302deg 15kt 3558 9423

The NWS Storm Prediction Center has issued a
Severe Thunderstorm Watch for portions of

       northern Arkansas
       extreme southern Missouri
       eastern Oklahoma

Effective this Saturday afternoon and evening from 1230 PM until
800 PM CDT.

Hail to 1.5 inches in diameter... thunderstorm wind gusts to 70
mph... and dangerous lightning are possible in these areas.

The Severe Thunderstorm Watch area is approximately along and 45
statute miles north and south of a line from 50 miles south
southwest of Muskogee Oklahoma to 25 miles north of Walnut Ridge
Arkansas. For a complete depiction of the watch see the
associated watch outline update (wous64 kwns wou5).

Remember... a Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings. Severe thunderstorms can and occasionally
do produce tornadoes.

Discussion... thunderstorms should continue to intensify along ewd
tracking MCS outflow moving into hot/unstable airmass from ern OK
across nrn AR this afternoon. Despite limited mid-level
flow... sufficient lift along leading edge of cold pool... and
steepening low-level lapse rates should contribute to damaging wind
potential as storms move/develop east through the afternoon.

Aviation... a few severe thunderstorms with hail surface and aloft
to 1.5 inches. Extreme turbulence and surface wind gusts to 60
knots. A few cumulonimbi with maximum tops to 500. Mean storm
motion vector 28015.


... Carbin

... Heat advisory in effect from 1 PM this afternoon to 7 PM CDT
this evening...

The National Weather Service in Tulsa has issued a heat
advisory... which is in effect from 1 PM this afternoon to 7 PM
CDT this evening.

For the following counties...
in Arkansas...
Crawford... Franklin and Sebastian.

In Oklahoma...
Pushmataha... Choctaw... Okfuskee... Okmulgee... Muskogee...
McIntosh... Sequoyah... Pittsburg... Haskell... Latimer and Le Flore.

Heat index values of around 105 degrees will be common this
afternoon in areas south of a line from Okemah to Muskogee to
Ozark. Areas near and north of Interstate 40 may see scattered
thunderstorms develop this afternoon... possibly bringing relief by
this afternoon. Areas to the south will continue to see hot
temperatures into the evening hours. A cold front will move
through tonight and bring much cooler temperatures Sunday.

Precautionary/preparedness actions...

A heat advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Persons spending time outside should lessen their
activity... drink plenty of liquids... preferably water. Take
frequent breaks and wear light colored... loose-fitting clothing.
Strenuous activities should be reduced... eliminated or rescheduled
to the coolest time of the day. Prolonged exposure combined with
physical activity can cause heat exhaustion and heat stroke.

Never leave children or pets in a closed... parked vehicle!
Temperatures inside can reach over 150 degrees quickly... resulting
in heat stroke and death.

... Significant weather alert...

The National Weather Service in Tulsa has issued a
significant weather alert effective until 115 PM CDT
for the following counties...

In west central Arkansas
     Sebastian and southwestern Franklin

In northwest Arkansas
     southwestern Crawford

In east central Oklahoma
     southeastern Sequoyah

In southeast Oklahoma
     southeastern Haskell and northern Le Flore

At 1229 PM CDT... Doppler radar indicated strong thunderstorms along a
line extending from 2 miles southwest of Van Buren to 3 miles
northwest of Milton... moving southeast at 35 mph. Some locations that
will be affected by these storms include... Cottonwood... Keota...
Muldrow... Roland... Moffett... Poteau... Summerfield... Heavener...
Howe... Wister... Shady Point... Cameron... Milton... Panama... Bokoshe...
Rock Island... Spiro... Pocola... scullyville... Braden... Cowlington...
Arkoma... Liberty... Crossroads... Milltown... Patterson... Mill creek...
Charleston... Ursula... Fort Smith... Hartford... Hackett... Greenwood...
Barling... Lavaca... Arkola... Huntington... Midland... Dayton...
Witcherville... Washburn... Burnville... Jenson... Excelsior...
Mansfield... Bonanza... Fort Chaffee... Jenny Lind... Rye Hill...
Bloomer... Central City... Van Buren... Shibley and Dora.

These storms will be capable of producing small hail and wind gusts
to 50 mph. Residents in these areas should remain alert in case the
significant weather alert is upgraded to a warning.

Lat... Lon 3522 9398 3523 9402 3518 9402 3514 9406
      3514 9413 3510 9415 3507 9423 3495 9423
      3495 9437 3492 9444 3489 9445 3480 9486
      3523 9498 3551 9439 3526 9394
time... Mot... loc 1729z 341deg 29kt 3540 9436 3517 9490