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FLASH FLOODING IN ATLANTIC

Weather

May 11th, 2014 by Ric Hanson

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
933 PM CDT SUN MAY 11 2014
0926 PM FLASH FLOOD ATLANTIC
05/11/2014 CASS IA EMERGENCY MNGR
HIGHWAY 6 JUST NORTHWEST OF ATLANTIC HAS WATER FLOWING UP
TO CURB LEVEL. BULL CREEK DRAINAGE AREA IS BEGINNING TO
OVERFLOW. LOTS OF STREET FLOODING THROUGHOUT THE TOWN OF
ATLANTIC.

FLASH FLOOD WARNING – CASS & AUDUBON COUNTIES

Weather

May 11th, 2014 by Ric Hanson

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* FLASH FLOOD WARNING FOR…
SOUTHEASTERN CRAWFORD COUNTY IN WEST CENTRAL IOWA…
CASS COUNTY IN SOUTHWEST IOWA…
SOUTHWESTERN CARROLL COUNTY IN WEST CENTRAL IOWA…
AUDUBON COUNTY IN WEST CENTRAL IOWA…

* UNTIL 330 AM CDT MONDAY

* AT 929 PM CDT…DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS MUCH OF WEST CENTRAL IOWA WITH UP TO TWO INCHES
OF RAIN HAVING ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY. AN ADDITIONAL INCH OR TWO OR RAIN IS POSSIBLE THROUGH 11
PM CDT.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…
ATLANTIC…AUDUBON…MANNING…GRISWOLD…ANITA…EXIRA…
MANILLA…ELK HORN…LEWIS…TEMPLETON…MASSENA…KIMBALLTON…
DEDHAM…CUMBERLAND…HALBUR…BRAYTON…MARNE…WIOTA…GRAY AND
ASPINWALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

Severe Weather Statement

Weather

May 11th, 2014 by Ric Hanson

MONTGOMERY IA-POTTAWATTAMIE IA-
928 PM CDT SUN MAY 11 2014

...THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY AND SOUTHEASTERN
POTTAWATTAMIE COUNTIES IS CANCELLED…

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
AREA. THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER GUSTY WINDS
ARE STILL POSSIBLE WITH THESE THUNDERSTORMS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY AFTERNOON
FOR SOUTHWESTERN IOWA AND SOUTHEAST NEBRASKA.

Severe Thunderstorm Warning: Audubon/Guthrie/Adair Counties

Weather

May 11th, 2014 by Ric Hanson

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
921 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHEASTERN CARROLL COUNTY IN WEST CENTRAL IOWA…
EASTERN AUDUBON COUNTY IN WEST CENTRAL IOWA…
WESTERN DALLAS COUNTY IN CENTRAL IOWA…
GUTHRIE COUNTY IN WEST CENTRAL IOWA…
NORTHERN ADAIR COUNTY IN SOUTHWEST IOWA…
GREENE COUNTY IN WEST CENTRAL IOWA…

* UNTIL 1000 PM CDT

* AT 921 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR CARROLL TO 11 MILES EAST OF ATLANTIC…MOVING
EAST AT 45 MPH.

HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS…SIDING AND TREES.

* SEVERE THUNDERSTORMS WILL BE NEAR…
JEFFERSON AND STUART AROUND 955 PM CDT.

Severe Thunderstorm warning: Cass/Adair/Adams Counties

Weather

May 11th, 2014 by Ric Hanson

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
905 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
CASS COUNTY IN SOUTHWEST IOWA…
WESTERN ADAIR COUNTY IN SOUTHWEST IOWA…
ADAMS COUNTY IN SOUTHWEST IOWA…

* UNTIL 945 PM CDT

* AT 905 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTH OF GRISWOLD TO NEAR ELLIOTT TO 6 MILES
NORTHWEST OF ESSEX…MOVING EAST AT 45 MPH.

HAZARD…60 MPH WIND GUSTS AND NICKEL SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

* SEVERE THUNDERSTORMS WILL BE NEAR…
GRISWOLD AROUND 910 PM CDT.
ATLANTIC AROUND 915 PM CDT.
CORNING AND LAKE ICARIA AROUND 945 PM CDT.

Severe Thunderstorm Warning: Montgomery/SE Pott County

Weather

May 11th, 2014 by Ric Hanson

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
909 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
MONTGOMERY COUNTY IN SOUTHWEST IOWA…
SOUTHEASTERN POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…

* UNTIL 945 PM CDT

* AT 908 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTHWEST OF ATLANTIC TO NEAR RED OAK…
MOVING EAST AT 35 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…
RED OAK…VILLISCA…STANTON…ELLIOTT…GRANT AND VIKING LAKE
STATE PARK.

Severe T-storm warning update

Weather

May 11th, 2014 by Ric Hanson

SHELBY IA-HARRISON IA-POTTAWATTAMIE IA-
833 PM CDT SUN MAY 11 2014

…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR SHELBY…EASTERN HARRISON AND EASTERN POTTAWATTAMIE COUNTIES…

AT 833 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 11 MILES SOUTHEAST OF MOORHEAD TO HARLAN TO NEAR AVOCA
TO NEAR MACEDONIA…MOVING NORTHEAST AT 50 MPH.

HAZARD…70 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE
TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE
HOMES…ROOFS AND OUTBUILDINGS.

Severe Thunderstorm Warning: Cass, Audubon, Carroll, Crawford Counties

Weather

May 11th, 2014 by Ric Hanson

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
824 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
CRAWFORD COUNTY IN WEST CENTRAL IOWA…
NORTHERN CASS COUNTY IN SOUTHWEST IOWA…
WESTERN CARROLL COUNTY IN WEST CENTRAL IOWA…
AUDUBON COUNTY IN WEST CENTRAL IOWA…

* UNTIL 930 PM CDT

* AT 823 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 8 MILES SOUTHEAST OF PISGAH TO 7 MILES NORTHEAST OF
PERSIA TO NEAR SHELBY TO MACEDONIA…MOVING NORTHEAST AT 45 MPH.

HAZARD…70 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE
TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE
HOMES…ROOFS AND OUTBUILDINGS.

* SEVERE THUNDERSTORMS WILL BE NEAR…
DUNLAP AROUND 840 PM CDT.
DENISON…ATLANTIC AND MANNING AROUND 900 PM CDT.
AUDUBON AROUND 905 PM CDT.
CARROLL AROUND 925 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
KIMBALLTON…SWAN LAKE STATE PARK…HALBUR…ARCADIA…MANILLA…
KIRON…EXIRA…DENISON MUNICIPAL AIRPORT…DOW CITY AND ARION.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 49 AND 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

THIS IS A DANGEROUS SITUATION. THESE STORMS ARE PRODUCING WIDESPREAD
WIND DAMAGE ACROSS THE OMAHA METRO AREA. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

Severe Thunderstorm Warning: Shelby/Harrison/Pott Counties

Weather

May 11th, 2014 by Ric Hanson

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
808 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SHELBY COUNTY IN SOUTHWEST IOWA…
EASTERN HARRISON COUNTY IN SOUTHWEST IOWA…
POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…

* UNTIL 900 PM CDT

* AT 808 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LOGAN TO NEAR MINDEN TO NEAR TREYNOR TO 8 MILES
NORTHEAST OF GLENWOOD…MOVING NORTHEAST AT 45 MPH.

HAZARD…70 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE
TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE
HOMES…ROOFS AND OUTBUILDINGS.

* LOCATIONS IMPACTED INCLUDE…
HARLAN…LOGAN…OAKLAND…AVOCA…TREYNOR…CARSON…WALNUT…ELK
HORN…SHELBY…MINDEN…EARLING…IRWIN…PERSIA…DEFIANCE…
MACEDONIA…WOODBINE…DUNLAP…NEOLA…PANAMA AND HANCOCK.

Tornado Watch information

Weather

May 11th, 2014 by Ric Hanson

WATCH COUNTY NOTIFICATION FOR WATCHES 142/145
NATIONAL WEATHER SERVICE DES MOINES IA
749 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 145 UNTIL 3 AM CDT MONDAY WHICH REPLACES A PORTION OF TORNADO WATCH 142. THE NEW WATCH IS VALID FOR THE FOLLOWING AREASĀ  IN IOWA THE NEW WATCH INCLUDES 7 COUNTIES

IN SOUTH CENTRAL IOWA

RINGGOLD UNION

IN SOUTHWEST IOWA

ADAIR ADAMS CASS
TAYLOR

IN WEST CENTRAL IOWA

AUDUBON

THIS INCLUDES THE CITIES OF…ADAIR…ATLANTIC…AUDUBON…
BEDFORD…CORNING…CRESTON…EXIRA…FONTANELLE…GREENFIELD…
LENOX…MOUNT AYR…NEW MARKET AND STUART.

PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 50%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 20%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 40%
PROB OF 1 OR MORE WIND EVENTS 75 MPH : 20%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 60%
PROB OF 1 OR MORE HAIL EVENTS 2 INCHES : 30%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 85%
MAX HAIL /INCHES/ : 2.0
MAX WIND GUSTS SURFACE /MPH/ : 70