POTTAWATTAMIE IA-HARRISON IA-

722 PM CDT SUN AUG 31 2014

…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHWESTERN POTTAWATTAMIE AND SOUTHEASTERN HARRISON COUNTIES…

AT 721 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR MISSOURI VALLEY…OR 17 MILES NORTHEAST OF OMAHA…MOVING EAST AT 30 MPH.

HAZARD…70 MPH WIND GUSTS.

SOURCE…TRAINED WEATHER SPOTTERS.

IMPACT…EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE HOMES…ROOFS AND OUTBUILDINGS.

LOCATIONS IMPACTED INCLUDE…

MISSOURI VALLEY…LOGAN…NEOLA…HISTORICAL VILLAGE WELCOME CENTER…ARROWHEAD PARK AND HITCHCOCK NATURE CENTER.

THIS INCLUDES THE FOLLOWING HIGHWAYS…INTERSTATE 29 BETWEEN MILE MARKERS 66 AND 79. INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 20 AND 23.

60 MPH WINDS WERE REPORTED AT 709 PM AND 5 INCH DIAMETER TREE LIMBS WERE BLOWN DOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A

BUILDING.

POTTAWATTAMIE IA-HARRISON IA-WASHINGTON NE-

710 PM CDT SUN AUG 31 2014

…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHWESTERN POTTAWATTAMIE…SOUTHERN HARRISON AND SOUTHEASTERN WASHINGTON COUNTIES…

AT 709 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR FORT CALHOUN…OR 15 MILES NORTH OF OMAHA…MOVING EAST AT 30 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

715 PM CDT SUN AUG 31 2014

TORNADO WATCH 482 IS IN EFFECT UNTIL 200 AM CDT FOR THE FOLLOWING LOCATIONS

. IOWA COUNTIES INCLUDED ARE

ADAIR ADAMS AUDUBON BOONE CALHOUN CARROLL CASS CLARKE DALLAS DECATUR FREMONT GREENE GRUNDY GUTHRIE HAMILTON HARDIN JASPER LUCAS MADISON MARION MARSHALL MONTGOMERY PAGE POLK RINGGOLD STORY TAYLOR UNION WARREN WAYNE WEBSTER

701 PM CDT SUN AUG 31 2014

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR…NORTHWESTERN POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…SOUTHERN HARRISON COUNTY IN SOUTHWEST IOWA…SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA… UNTIL 745 PM CDT

* AT 700 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED OVER FORT CALHOUN…OR 15 MILES NORTH OF OMAHA…MOVING EAST AT 30 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…

BLAIR…MISSOURI VALLEY…LOGAN…FORT CALHOUN…NEOLA…DESOTO BEND NATIONAL WILDLIFE REFUGE…HISTORICAL VILLAGE WELCOME CENTER…WILSON ISLAND STATE PARK…ARROWHEAD PARK AND HITCHCOCK NATURE CENTER.

THIS INCLUDES THE FOLLOWING HIGHWAYS…

HIGHWAY 30 IN IOWA BETWEEN MILE MARKERS 1 AND 5. HIGHWAY 30 IN NEBRASKA NEAR MILE MARKER 450. HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 102 AND 111. INTERSTATE 29 BETWEEN MILE MARKERS 66 AND 79. INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 20 AND 23.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR

SOUTHWEST IOWA AND EASTERN NEBRASKA.

HARRISON IA-POTTAWATTAMIE IA-WASHINGTON NE-

657 PM CDT SUN AUG 31 2014

SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN POTTAWATTAMIE…SOUTHERN HARRISON AND SOUTHEASTERN WASHINGTON COUNTIES UNTIL 745 PMCDT…

AT 657 PM CDT…DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR FORT CALHOUN…OR 16 MILES NORTH OF OMAHA…MOVING EAST AT 30 MPH. WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE…

BLAIR…MISSOURI VALLEY…LOGAN…FORT CALHOUN…PERSIA…MODALE…

DESOTO BEND NATIONAL WILDLIFE REFUGE…HISTORICAL VILLAGE WELCOME

CENTER AND WILSON ISLAND STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM…AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. THIS STORM MAY INTENSIFY…SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS…AS WELL AS LOCAL CABLE TV OUTLETS…FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

654 PM CDT SUN AUG 31 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING FOR…CRAWFORD COUNTY IN WEST CENTRAL IOWA…WESTERN CARROLL COUNTY IN WEST CENTRAL IOWA…* UNTIL 1245 AM CDT

* AT 652 PM CDT…DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. LAW ENFORCEMENT HAS REPORTED THAT WATER IS OVER HIGHWAY 141 BETWEEN DENISON AND CHARTER OAK. RAINFALL AMOUNTS NEAR 2 INCHES HAVE OCCURRED WITH AN ADDITIONAL ONE TO TWO INCHES POSSIBLE IN CRAWFORD COUNTY. THIS ACTIVITY WILL SPREAD EAST INTO CARROLL COUNTY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE… CARROLL…DENISON…MANNING…SCHLESWIG…MANILLA…DOW CITY…CHARTER OAK…ARCADIA…BREDA…VAIL…TEMPLETON…WESTSIDE…KIRON…DEDHAM…DELOIT…HALBUR…RICKETTS…ARION…BUCK GROVEAND ASPINWALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. TURN AROUND…DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.

MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-
PAGE COUNTIES IN IA; KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER-
SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE-JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON COUNTIES IN NE….
410 PM CDT SUN AUG 31 2014

TONIGHT AND MONDAY…

THUNDERSTORM COVERAGE AND STRENGTH WILL INCREASE ACROSS THE AREA LATE THIS AFTERNOON INTO THIS EVENING. SEVERE THUNDERSTORMS ARE LIKELY WITH ISOLATED TORNADOES POSSIBLE THROUGH 700 PM. THE PRIMARY HAZARDS WITH MOST STORMS WILL BE LARGE HAIL AND DAMAGING WINDS AS STORMS CONSOLIDATE INTO A LINE CONFIGURATION BY EARLY THIS EVENING.

MINOR FLOODING SHOULD CONTINUE ALONG SOME SMALL STREAMS IN SOUTHEAST NEBRASKA. THAT FLOODING MAY BE AGGRAVATED OR NEW FLOODING COULD DEVELOP TONIGHT DUE TO LOCALLY HEAVY RAIN.

THE THUNDERSTORMS ARE THE RESULT OF A COLD FRONT PUSHING INTO EASTERN NEBRASKA LATE THIS AFTERNOON.

MONDAY NIGHT THROUGH SUNDAY…

THERE IS A CHANCE FOR THUNDERSTORMS MONDAY NIGHT FOR NORTHERN PARTS OF THE AREA AND FOR THE SOUTH TUESDAY NIGHT. MORE WIDESPREAD STORMS ARE POSSIBLE THURSDAY NIGHT INTO FRIDAY AS ANOTHER COLD FRONT MOVES THROUGH THE REGION.

.SPOTTER INFORMATION STATEMENT…

STORM SPOTTERS WILL BE NEEDED DURING THE LATE AFTERNOON AND THIS EVENING.

CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-CASS-
ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR-
407 PM CDT SUN AUG 31 2014

THIS AFTERNOON AND TONIGHT…A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA. THUNDERSTORMS ARE EXPECTED THIS EVENING ACROSS THE AREA. THE PRIMARY SEVERE THREATS ARE LARGE HAIL AND HIGH WINDS…WITH AN ISOLATED TORNADO POSSIBLE. HEAVY RAINFALL IS POSSIBLE WITH SOME STORMS PRODUCING RAINFALL TOTALS OF 1 TO 3 INCHES.

MONDAY THROUGH SATURDAY…

THUNDERSTORMS WILL LINGER INTO MONDAY MORNING. ADDITIONAL ROUNDS OF THUNDERSTORMS ARE EXPECTED LATE TUESDAY NIGHT THROUGH FRIDAY. THE PROBABILITY OF SEVERE WEATHER IS LOW…WITH THE BEST CHANCE FOR SEVERE THUNDERSTORMS THURSDAY INTO FRIDAY.

.SPOTTER INFORMATION STATEMENT…

SPOTTER ACTIVATION IS LIKELY THIS EVENING INTO TONIGHT.

343 PM CDT SUN AUG 31 2014

…THUNDERSTORMS WITH HEAVY RAIN LIKELY TONIGHT…

Flash Flood Watch (Counties in green); Tornado Watch (Counties in yellow)

THUNDERSTORMS ARE EXPECTED TO BECOME WIDESPREAD THIS EVENING. THE STORMS WILL HAVE THE POTENTIAL TO PRODUCE HEAVY RAINFALL OVER A SHORT PERIOD OF TIME. IN ADDITION…SEVERAL STORMS MAY TRACK ACROSS SIMILAR AREAS AND FURTHER ENHANCE THE HEAVY RAIN THREAT.

IOWA COUNTIES: CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK-CASS-ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR-

FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH MONDAY MORNING…

WIDESPREAD HEAVY RAINFALL OVER THE PAST WEEK HAS RESULTED IN SATURATED SOILS AND FAVORABLE CONDITIONS FOR SIGNIFICANT RUNOFF. HEAVY RAINFALL IS POSSIBLE TONIGHT WITH THE POTENTIAL FOR WIDESPREAD 1 TO 2 INCHES OF RAIN. HEAVIER RAINFALL AMOUNTS IN EXCESS OF 3 INCHES MAY OCCUR.

FLASH FLOODING IS POSSIBLE ACROSS THE REGION. SIGNIFICANT PONDING IN URBAN AREAS IS POSSIBLE. IN ADDITION…SMALL STREAMS MAY RISE ABOVE THEIR BANKS AND CAUSE FLOODING OF LOW LYING AREAS INCLUDING ROADWAYS. FLASH FLOODING AT NIGHT IS EXTREMELY DANGEROUS. IN ADDITION…THESE RAINFALL AMOUNTS WILL CAUSE A FEW LARGER STREAMS TO NEAR FLOOD STAGE OVER THE NEXT FEW DAYS.

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.

335 PM CDT SUN AUG 31 2014

TORNADO WATCH 479 IS IN EFFECT UNTIL 900 PM CDT FOR THE FOLLOWING LOCATIONS

IOWA COUNTIES INCLUDED ARE: BUENA VISTA CHEROKEE CLAY CRAWFORD DICKINSON EMMET HARRISON IDA MILLS MONONA O’BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS POTTAWATTAMIE SAC SHELBY SIOUX WOODBURY.

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 335 PM UNTIL 900 PM CDT.

* PRIMARY THREATS INCLUDE…A FEW TORNADOES POSSIBLE; SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE; SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG. AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST OF SPENCER IOWA TO 45 MILES SOUTHWEST OF CONCORDIA KANSAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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.