733 PM CDT THU MAY 7 2015

SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN POTTAWATTAMIE, WESTERN MONTGOMERY,SOUTHERN MILLS,NORTHWESTERN PAGE…NORTHERN FREMONT…COUNTIES UNTIL 830 PM CDT…

AT 732 PM CDT…DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR 30 MILES SOUTH OF OMAHA…MOVING NORTHEAST AT 40 MPH. HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE…

NEBRASKA CITY…RED OAK…MALVERN…STANTON…EMERSON…UNION… TABOR…THURMAN…RANDOLPH…HASTINGS…IMOGENE…COBURG AND CAMP CATRON.

THIS INCLUDES THE FOLLOWING HIGHWAYS…

HIGHWAY 34 IN IOWA BETWEEN MILE MARKERS 17 AND 42.

HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 19 AND 34.

HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 51 AND 59.

INTERSTATE 29 BETWEEN MILE MARKERS 12 AND 27.

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.

716 PM CDT THU MAY 7 2015

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLOOD WARNING FOR…NORTHWESTERN MONTGOMERY COUNTY IN SOUTHWESTERN IOWA…EASTERN MILLS COUNTY IN SOUTHWESTERN IOWA… UNTIL 115 AM CDT FRIDAY

* AT 714 PM CDT…A GAUGE ON INDIAN CREEK NEAR EMERSON WAS REPORTING LEVELS OVER FLOOD STAGE. RADAR ESTIMATED UP TO 4 INCHES OF THIS RAIN IN THAT AREA FROM EARLIER STORMS. ADDITIONAL STORMS COULD MOVE IN THIS EVENING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…EMERSON.

529 PM CDT THU MAY 7 2015

THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CASS COUNTY IS CANCELLED…THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS…AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM. TO REPORT SEVERE WEATHER…CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE DES MOINES.

522 PM CDT THU MAY 7 2015

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR SOUTHWESTERN CASS COUNTY…

AT 520 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED 6 MILES EAST OF GRISWOLD…OR 13 MILES SOUTH OF ATLANTIC…MOVING EAST AT 25 MPH. HAZARD…QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…DAMAGE TO VEHICLES IS EXPECTED.

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTHWESTERN CASS COUNTY…INCLUDING THE FOLLOWING LOCATIONS…CUMBERLAND…GRISWOLD PARK AND COLD SPRINGS STATE PARK.

456 PM CDT THU MAY 7 2015

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CASS COUNTY IN SOUTHWESTERN IOWA…UNTIL 545 PM CDT

* AT 456 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR ELLIOTT…OR 19 MILES SOUTHWEST OF ATLANTIC…MOVING NORTHEAST AT 25 MPH.

HAZARD…60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. SOURCE…RADAR INDICATED. At 5-p.m. law enforcement reported pea sized hail in Griswold.

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

* THIS SEVERE THUNDERSTORM WILL BE NEAR…GRISWOLD AROUND 510 PM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CUMBERLAND…GRISWOLD PARK AND COLD SPRINGS STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

445 PM CDT THU MAY 7 2015

A STRONG THUNDERSTORM IS HEADING INTO SOUTHWEST CASS COUNTY.

AT 442 PM CDT…DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES SOUTHEAST OF MACEDONIA…OR 24 MILES SOUTHWEST OF ATLANTIC… MOVING NORTHEAST AT 20 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 45 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STRONG THUNDERSTORM WILL BE NEAR…GRISWOLD AROUND 515 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LEWIS…GRISWOLD PARK AND COLD SPRINGS STATE PARK.

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.

441 PM CDT THU MAY 7 2015

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…SOUTHEASTERN POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA…NORTHERN MONTGOMERY COUNTY IN SOUTHWESTERN IOWA…UNTIL 515 PM CDT

* AT 441 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR ELLIOTT…OR 23 MILES SOUTHWEST OF ATLANTIC…MOVING NORTHEAST AT 20 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.

* LOCATIONS IMPACTED INCLUDE…ELLIOTT…GRANT AND FARM CREEK PUBLIC WILDLIFE AREA. THIS INCLUDES HIGHWAY 59 IN IOWA NEAR MILE MARKER 41.

PRECAUTIONARY/PREPAREDNESS ACTIONS… FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING.