Laredo, Texas

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

       south Texas
       coastal waters

Effective this Thursday morning and evening from 700 am until 600
PM CDT.

Tornadoes... hail to 0.5 inch in diameter... thunderstorm wind
gusts to 70 mph... and dangerous lightning are possible in these
areas.

The Tornado Watch area is approximately along and 65 statute
miles either side of a line from 45 miles north of Palacios Texas
to 40 miles northwest of Laredo Texas. For a complete depiction
of the watch see the associated watch outline update (wous64 kwns
wou4).

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... this Tornado Watch replaces Tornado
Watch number 741. Watch number 741 will not be in effect after
700 am CDT.

Discussion... very moist and moderate to strongly-sheared low-lvl
environment in nrn quadrant of T.D. Dolly will remain favorable for
updrafts/storms with low-lvl rotation/possible tornadoes. Sfc
heating and weak convergence along arc of confluence extending N/NE
from circulation center may Foster expansion of existing
shower/storm coverage in outer fringe of circulation later today.

Aviation... tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inch. Extreme turbulence and surface
wind gusts to 60 knots. A few cumulonimbi with maximum tops to
500. Mean storm motion vector 15035.


... Corfidi

... Flood Watch remains in effect through late tonight...

The Flood Watch continues for

* a portion of south Texas... including the following area... Webb.

* Through late tonight

* Tropical Storm Dolly will move into Webb County later this
morning. Dolly will move through Webb County through the
afternoon and this evening. Heavy rainfall between 2 and 4
inches with locally higher amounts in excess of 6 inches can be
expected.

A Flood Watch means there is a potential for flooding based on
current forecasts. Do not drive your vehicle into areas where
water covers the roadway. The water depth may be too high to allow
your car to cross safely. Turn around and do not drown. Vehicles
caught in rising waters should be abandoned quickly. Move to
higher ground.

Do not drive your vehicle into areas where water covers the
roadway. The water depth may be too high to allow your car to
cross safely. Turn around and do not drown. Vehicles caught in
rising waters should be abandoned quickly.

... Tropical Storm Wind Warning remains in effect until 10 am CDT
this morning...

... New information...

Tropical Storm Dolly is expected to continue to weaken as it
moves west-northwest into the Rio Grande plains today.

... Areas affected...

This statement recommends actions to be taken by persons in...
Webb... Duval... and Jim Wells counties.

... Watches/warnings...

Tropical Storm Wind Warning in effect until 10 am CDT this
morning.

A Tornado Watch is in effect through this afternoon until 6 PM
CDT.

Flood Watch in effect through late Thursday night.

... Storm information...

At 7 am CDT... the center of Tropical Storm Dolly was located near
latitude 27.2 north... longitude 98.9 west... 50 miles east-southeast
of Laredo. Movement is toward the west-northwest near 7 mph.
Maximum sustained winds have decreased to around 50 mph. A
continued motion toward the west-northwest is expected during the
next day or so.

... Precautionary/preparedness actions...

Motorists should exercise extreme caution today as heavy rainfall
from the outer bands of Dolly may cause some roads to flood today.
Most flood deaths occur in automobiles. Never drive your vehicle into
areas where the water covers the roadway. Flood waters are usually
deeper than they appear. Just one foot of flowing water is powerful
enough to sweep vehicles off the Road. When encountering flooded
roads make the smart choice... turn around... dont drown. In
addition... tropical storm force wind gusts will make driving
difficult for high profile vehicles.

... Winds...

Winds will increase into the 25 to 35 mph range with gusts as
high as 45 mph with rain bands. Tropical storm force gusts will
be intermittent through the evening hours.

... Inland flooding...

As Dolly progresses further into the Rio Grande plains... the
potential for very heavy rainfall will increase today through
this evening. Rainfall amounts today through tonight will average
between 4 and 8 inches... with the highest amounts over southern
potions of Webb... Duval and Jim Wells counties. Rainfall rates of
two or more inches per hour can be expected at times. Isolated
amounts 10 to 15 inches also cannot be ruled out. As a
result... life threatening flash flooding will be possible over
flood prone areas and over locations receiving these high rainfall
rates.

... Tornadoes...

Isolated tornadoes will be possible through this morning as rain
bands from Dolly affect the area.

... Next update...

The next statement will be issued around 11 am CDT.

... Record daily maximum rainfall set at Corpus Christi...

a record rainfall of 2.86 inches was set at Corpus Christi yesterday
July 23, this breaks the old record of 1.47 set in 1919.