Carnegie, OK

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of
northwest Arkansas
central and eastern Oklahoma
northwest Texas

* effective this Monday afternoon and evening from 110 PM until
1000 PM CDT.

* Primary threats include...
several tornadoes possible
numerous large hail events likely with a few very large hail
    events to 4 inches in diameter possible
numerous damaging wind gusts to 70 mph likely

The Tornado Watch area is approximately along and 115 statute
miles east and west of a line from 30 miles northwest of Grove
Oklahoma to 40 miles east of Wichita Falls Texas. For a complete
depiction of the watch see the associated watch outline update
(wous64 kwns wou1).

Precautionary/preparedness actions...

Remember... a Tornado Watch means conditions are favorable for
tornadoes and 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.


Other watch information... continue... ww 189... ww 190...

Discussion... rapid intense storm development is expected during the
next few hours... both near a stalled surface front roughly west of
the I-35 corridor... and near the pre-frontal dryline nosing
northeastward into south central Oklahoma by late afternoon.
Isolated supercells are likely along the dryline... with the most
prominent tornado threat... which probably will increase by early
evening as the southerly low-level jet strengthens and enlarges
low-level hodographs. One or two strong tornadoes may not be out of
the question. Otherwise... large hail is likely... some very large...
with increasing damaging wind potential across eastern Oklahoma as
convection consolidates and evolves into an organized cluster.

Aviation... tornadoes and a few severe thunderstorms with hail
surface and aloft to 4 inches. Extreme turbulence and surface
wind gusts to 60 knots. A few cumulonimbi with maximum tops to
600. Mean storm motion vector 25035.


... Kerr

1150 am CDT Monday may 20 2013

Severe thunderstorms are expected across parts of the area. The
National Weather Service in Norman urges you to take this time to
think about what you will do to stay safe if storms approach.

Make sure you have more than one source of local weather warnings
and information. If you have a weather radio, be sure it is working
properly. Think about how you'll receive a warning if you lose cell
phone or internet service.

Check the weather often throughout the day. If you will be traveling
or have outdoor activities planned, be sure you can get the latest
weather information and keep up with developing severe weather.

If storms threaten you, remember these basic safety guidelines:

Severe thunderstorms produce large hail and damaging winds. If you
hear a Severe Thunderstorm Warning for your location, seek shelter
in a sturdy building, and stay away from doors and windows. If
you're driving, find substantial shelter to avoid being caught in
large hail and strong winds. And remember that every thunderstorm
produces dangerous lightning, and that no place outside is safe.

If you hear a Tornado Warning for your location, or feel threatened
by a tornado, you need to act quickly to protect yourself. An
underground shelter or safe room is the safest place. If no
underground shelter is available, take cover in a sturdy building.
Go to the lowest floor and stay away from doors, windows and outside
walls. Your goal is to put as many walls between you and the tornado
as you can. You should protect yourself from flying and falling
debris with pillows or blankets. Mobile homes and vehicles are not
safe in a tornado, so be sure you have plenty of time to get to a
sturdy shelter.

Monitor the latest information from the National Weather Service in
Norman by listening to weather radio or by visiting our website at
weather.Gov/Norman.