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flood watch

Statement as of 3:17 am CST on February 17, 2012

Areal Flood Watch

… Flood Watch in effect from noon CST today through Saturday
morning…
The National Weather Service in Houston/Galveston has issued a
* Flood Watch for a portion of southeast Texas… including the
following counties… Austin… Brazoria… Brazos… Burleson…
Chambers… Colorado… Fort Bend… Galveston… Grimes…
Harris… Houston… Jackson… Liberty… Madison… Matagorda…
Montgomery… Polk… San Jacinto… Trinity… Walker… Waller…
Washington and Wharton.
* From noon CST today through Saturday morning
* an upper level disturbance coupled with an increase in moisture
and favorable upper level winds will produce periods of rain
with a few thunderstorms possible this morning. As the upper
level low pressure system nears the area overnight the rainfall
should increase in intensity with large clusters of showers and
thunderstorms slowly moving east and northeast through the area.
Any rains during the day will help to saturate the ground and
with the heavy rainfall tonight the risk for flooding will
increase. Overnight rainfall totals may average around 1 inch
but large swaths of rain associated with the clusters of storms
may reach 3 to 4 inches. The rains should end Saturday morning
but then isolated showers and thunderstorms may redevelop in the
afternoon as the upper level low pressure system moves across
southeast Texas but if so would be more isolated in nature.
* Rains earlier this week have nearly saturated the soils in some
portions of the area. Flooding occurred earlier in the week in
Grimes and Walker counties with 1 to 3 inches of rain. Any
additional rain will exacerbate an already dangerous situation.
Though these areas may be in jeopardy earlier because of the
prior rains the clusters of storms expected overnight will be
capable of very heavy rainfall could move through other portions
of southeast Texas and could easily saturate the soils and
produce abundant runoff quickly leading to the flooding. Travel
overnight may be hazardous due to roads flooding and you should
check on the latest weather conditions and status of the roads
before traveling tonight and early Saturday.
Precautionary/preparedness actions…
A Flood Watch means there is a potential for flooding based on
current forecasts.
You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

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