Leota, Minnesota

Severe Thunderstorm Watch 568 remains valid until 2 am CDT Friday
for the following areas

In Iowa this watch includes 11 counties

In northwest Iowa

Buena Vista Cherokee Clay
Dickinson Ida Lyon
Obrien Osceola Plymouth
Sioux Woodbury

In Minnesota this watch includes 3 counties

In southwest Minnesota

Jackson Nobles rock

In Nebraska this watch includes 2 counties

In northeast Nebraska

Dakota Dixon

In South Dakota this watch includes 6 counties

In southeast South Dakota

Bon Homme Clay Lincoln
Turner Union Yankton

This includes the cities of... Alcester... Allen... Arnolds Park...
Avon... Battle Creek... Beresford... Canton... Centerville...
Chancellor... Cherokee... Elk Point... George... Harrisburg...
Hartley... Holstein... Hurley... Ida Grove... Inwood... Jackson...
Jefferson... Lakefield... Larchwood... Le Mars... Lennox... Luverne...
Marion... Milford... North Sioux City... Orange City... Parker...
Ponca... Rock Rapids... Sanborn... Scotland... Sheldon... Sibley...
Sioux Center... Sioux City... South Sioux City... Spencer...
Spirit Lake... Springfield... Storm Lake... Tabor... Tea... Tyndall...
Vermillion... Viborg... Wakefield... Worthington and Yankton.

... Flash Flood Warning remains in effect for Jackson... eastern
Nobles... southern Cottonwood... northern Clay... northeastern
O'Brien... Osceola and Dickinson counties until midnight CDT...

At 943 PM CDT... National Weather Service Doppler radar indicated
thunderstorms with very heavy rainfall moving across the warned
area. 1 to 3 inches of rain should fall in some areas causing local
flooding... especially in urban areas. The heaviest rain appears to
be moving east of the warned area... but flooding should continue.

Between 915 and 945 PM CDT... flooding of roads was occurring in the
cities of Milford... Arnolds Park... Terril... and Superior. Water was
up to one foot deep on Highway 71 in parts of Arnolds Park.

Slow moving thunderstorms are producing very heavy rainfall in the
warned area. Runoff from this excessive rainfall will cause flash
flooding to occur. Some locations that will experience flooding
include... Jackson... Spirit Lake... Windom... Worthington... Arnolds
Park... Bergen... Bingham Lake... Brewster... Fostoria... Harris... Heron
Lake... Lake Park... Lakefield... Melvin... Milford... Mountain Lake...
Ocheyedan... Okoboji... Orleans... Round Lake... Sibley... Superior...
Terril... Wahpeton and West Okoboji.

Precautionary/preparedness actions...

Excessive runoff from this storm will cause flooding of small creeks
and streams... highways and underpasses. Additionally... country roads
and farmlands along the banks of creeks... streams and other low lying
areas are also subject to flooding.


Lat... Lon 4350 9487 4349 9491 4317 9493 4322 9567
      4350 9580 4382 9558 4400 9487 4359 9485


Rsr

... Flash Flood Watch remains in effect until 7 am CDT Friday...

The Flash Flood Watch continues for

* portions of northwest Iowa... southwest Minnesota... northeast
Nebraska and southeast South Dakota... including the following
areas... in northwest Iowa... Buena Vista... Cherokee... Clay...
Dickinson... Ida... Lyon... Obrien... Osceola... Plymouth... Sioux
and Woodbury. In southwest Minnesota... Jackson... Nobles and
rock. In northeast Nebraska... Dakota and Dixon. In southeast
South Dakota... Bon Homme... Clay... Lincoln... Turner... Union and
Yankton.

* Until 7 am CDT Friday

* additional locally heavy rainfall of 1 to 3 inches is possible
tonight. Rainfall rates of 2 to 3 inches per hour are also
possible... dropping an inch of rain or more in 15 to 30 minutes.

* Areas that have received heavy rains in the past 3 to 10 days
could see flash flooding on creeks and streams with these
additional rains... and any urbanized areas that receive the
heaviest rainfall rates could see widespread flooding of
streets and underpasses.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.

07/09/2009 0840 PM

6 miles N of Brewster, Nobles County.

Thunderstorm wind damage, reported by amateur radio.


            8-10 inch branches snapped





07/09/2009 0747 PM

Ellsworth, Nobles County.

Hail e1.75 inch, reported by trained spotter.





07/09/2009 0903 PM

N Dundee, Nobles County.

Hail e1.00 inch, reported by trained spotter.






07/09/2009 0833 PM

Worthington, Nobles County.

Flash flood, reported by broadcast media.


            Flooded intersection of 10th street and 8th Avenue





07/09/2009 0822 PM

2 miles W of Worthington, Nobles County.

Hail e1.75 inch, reported by broadcast media.





07/09/2009 0827 PM

2 miles NW of Worthington, Nobles County.

Hail e1.75 inch, reported by law enforcement.






07/09/2009 0829 PM

3 miles NW of Worthington, Nobles County.

Hail e1.00 inch, reported by trained spotter.






07/09/2009 0747 PM

Ellsworth, Nobles County.

Hail e1.75 inch, reported by trained spotter.

... Severe Thunderstorm Watch safety rules...

A Severe Thunderstorm Watch means that conditions are favorable
for the development of severe weather in the designated area.
During a watch there is no cause for immediate concern. You should
go about your normal business... but be on the lookout and keep up
to date on the latest weather developments. Public safety
officials should activate prearranged plans.

A Severe Thunderstorm Warning... on the other hand... means that a
severe thunderstorm has been sighted or indicated by radar. People
in the path of the storm should take immediate action to safeguard
themselves and their family.

Technically speaking... a severe thunderstorm is defined as having
wind gusts which exceed 58 mph and/or hail at least 3/4 inch in
diameter. However... as these storms develop... they can be
accompanied by tornadoes. Listen to NOAA Weather Radio or other
local media to learn if a warning has been issued for your area.
Also... keep a close watch on the thunderstorms as tornadoes can
form quickly. If you see a tornado... move quickly into a basement.
If none is available... seek shelter in a small interior room on
the lowest floor and stay away from outside walls... doors and
windows. In schools... factories or other institutional type
buildings... stay out of auditoriums and gymnasiums.