Washington County, Missouri
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Washington County, Missouri
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Flash Flood Warning

Flash Flood Warning
National Weather Service St Louis MO
423 PM CST SAT FEB 24 2018

The National Weather Service in St Louis has issued a

* Flash Flood Warning for...
Crawford County in east central Missouri...
Iron County in southeastern Missouri...
Jefferson County in east central Missouri...
Ste. Genevieve County in southeastern Missouri...
Reynolds County in southeastern Missouri...
Madison County in southeastern Missouri...
Washington County in east central Missouri...
St. Francois County in southeastern Missouri...

* Until 1015 PM CST.

* At 421 PM CST, Doppler radar indicated heavy rain producing
thunderstorms which will cause flash flooding. 1 to 2 inches of
rainfall have fallen since 1 PM and is part of a much larger
rainfall event of up to 5 to 8 inches over the past several days.
Area roads are being closed due to these high rainfall amounts
over the past several days.

* Some locations that will experience flooding include...
Arnold, Farmington, Festus, Eureka, Sullivan, Bonne Terre, De Soto,
Pevely, Desloge, Crystal City, Ste. Genevieve, Fredericktown,
Herculaneum, Cuba, Hillsboro, Byrnes Mill, Potosi, Steelville,
Bourbon and Bismarck.

Additional rainfall amounts of up to a half inch or inch could occur
as the rainfall ends from west to east.

This includes the following highways...
Interstate 44 in Missouri between exits 203 and 218.
Interstate 55 in Missouri between exits 141 and 187.

This also includes Washington State Park, St. Joe State Park, St.
Francois State Park, Onondaga Cave State Park, Johnsons Shut-Ins
State Park, Hawn State Park, Fort Davidson Historic Site, Felix Valle
House State Park, Elephant Rocks State Park, Mastodon Historic Site,
Dillard Mill Historic Site, Taum Sauk Mountain State Park, Sandy
Creek Covered Bridge Historic Site, Missouri Mines Historic Site,
Gov. Dunklin's Grave Historic Site, and Clearwater Lake Recreational


Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.


LAT...LON 3705 9096 3726 9116 3750 9121 3751 9131
3759 9131 3759 9116 3770 9116 3770 9131
3779 9131 3779 9153 3821 9153 3820 9078
3848 9073 3850 9041 3819 9034 3796 8992
3764 9015 3731 9014 3727 9074 3705 9078


Flood Warning
742 AM CST Sat Feb 24 2018

The National Weather Service in St. Louis has issued a

* Flood Warning for
the Meramec River near Sullivan
* from this afternoon to Tuesday afternoon.
* At 7:00 AM Saturday the stage was 8.8 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage by this afternoon
and crest near 15.5 feet by tomorrow morning. The river is forecast
to fall below flood stage by Monday afternoon.
* Impact: At 14.5 feet...At this height the Arapaho Campground will
evacuate campers. This campground is about 8.5 river miles
downstream from the gage. About 14.3 miles upstream of the gage...
Cave Road access to Ozark Outdoors begins flooding near this
* Impact: At 14.0 feet...The main entrance road to the Meramec State
Park campground begins flooding...blocking acess to cabins 1-8...
the picnic and playground areas, and the Wilderness Trailhead
parking lot. At Onondaga Cave State Park...the primary entrance to
the campground is closed and the secondary entrance is used near
this height.
* Impact: At 13.5 feet...Cave Road begins flooding at Onondaga Cave
State Park near this height.
* Impact: At 12.0 feet...The main entrance gate at Onondaga Cave
State Park begins flooding near this height. This may eventually
force the park to use the rear entrance as the primary entrance to
the park.
* Impact: At 11.5 feet...A small bridge in the back of Meramec State
Park park is flooded, cutting the park in two. If the river
continues to rise...park officials will evacuate the campgrounds at
this point.
* Impact: At 11.0 feet...Right Bank begins to overflow flooding
wooded areas.

Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 02/25 02/26 02/27 02/28 03/01

Meramec River
Sullivan 11.0 8.76 15.5 13.3 9.2 7.0 6.0


LAT...LON 3800 9120 3806 9125 3829 9109 3840 9090
3837 9082


Flood Watch
Bond IL-Fayette IL-Clinton IL-Marion IL-Washington IL-Randolph IL-
Madison IL-Saint Clair IL-Monroe IL-Osage MO-Gasconade MO-
Warren MO-Saint Charles MO-Franklin MO-Saint Louis MO-
Saint Louis City MO-Jefferson MO-Crawford MO-Washington MO-
Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-
Reynolds MO-
Including the cities of Vandalia, Centralia, Salem, Chester,
Sparta, Alton, Edwardsville, Belleville, Cahokia, Saint Charles,
Washington, Union, Sullivan, Saint Louis, and Farmington
343 PM CST Sat Feb 24 2018


The Flood Watch continues for

* portions of Illinois and Missouri...including the following
counties...in Illinois...Bond IL...Clinton IL...Fayette IL...
Madison IL...Marion IL...Monroe IL...Randolph IL...Saint Clair
IL and Washington IL. In Missouri...Crawford MO...Franklin
MO...Gasconade MO...Iron MO...Jefferson MO...Madison MO...
Osage MO...Reynolds MO...Saint Charles MO...Saint Francois
MO...Saint Louis City MO...Saint Louis MO...Sainte Genevieve
MO...Warren MO and Washington MO.

* until midnight CST tonight

* Showers and thunderstorms will move across the area through
early this evening. Additional rainfall amounts of up to 2
inches are possible. Heavy rain falling over already saturated
ground will result in flooding on creeks and streams,
especially those that flooded earlier this week.

* Heavy rainfall will result in flooding of low lying or poor
drainage areas...and possibly flash flooding on smaller creeks
and streams. Significant rises on larger streams and rivers
will also be possible.


A Flood Watch is advanced notice that conditions are favorable
that may lead to flooding. People in the Watch area, especially
in flood prone areas, should use this time to check on
preparedness requirements. Stay informed, and be ready for action
if flooding is observed or if a Flood Warning is issued.



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