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Special Weather Statement: Cass, Adair & Adams Counties

Weather

August 23rd, 2016 by Ric Hanson

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1057 PM CDT TUE AUG 23 2016

…STRONG WINDS AND HEAVY RAIN TO IMPACT CASS…ADAIR…AND
ADAM COUNTIES THROUGH MIDNIGHT…AT 1055 PM CDT…DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTH OF WALNUT TO NEAR GRISWOLD TO NEAR MACEDONIA. MOVEMENT WAS EAST AT 30 MPH.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE…
ATLANTIC…GRISWOLD…LAKE ICARIA…ANITA…LEWIS…MASSENA…
CUMBERLAND…BRIDGEWATER…MARNE…WIOTA…CARBON…LAKE ICARIA STATE PARK…LAKE ANITA STATE PARK…COLD SPRINGS STATE PARK…GRISWOLD PARK…ATLANTIC MUNICIPAL AIRPORT AND ANITA MUNICIPAL AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS…AND MAY LEAD TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE.

Flood Advisory: s.w. Pott. County

Weather

August 23rd, 2016 by Ric Hanson

POTTAWATTAMIE IA-DOUGLAS NE-
1054 PM CDT TUE AUG 23 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLOOD ADVISORY FOR… SOUTHWESTERN POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA… SOUTHEASTERN DOUGLAS COUNTY IN EAST CENTRAL NEBRASKA… UNTIL 200 AM CDT

* AT 1053 PM CDT…DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
THUNDERSTORMS. THIS WILL CAUSE MINOR FLOODING IN THE ADVISORY AREA. UP TO TWO INCHES OF RAIN MAY HAVE ALREADY FALLEN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…
SOUTHEASTERN OMAHA…COUNCIL BLUFFS…UNDERWOOD…CARTER LAKE…
CRESCENT…MCCLELLAND…LAKE MANAWA STATE PARK AND NARROWS RIVER PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS…URBAN AREAS…HIGHWAYS…STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

Severe Thunderstorm warning continues until 11:15-p.m.

Weather

August 23rd, 2016 by Ric Hanson

SHELBY IA-HARRISON IA-MILLS IA-POTTAWATTAMIE IA-

1042 PM CDT TUE AUG 23 2016…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR SOUTHERN SHELBY…SOUTHEASTERN HARRISON…NORTHWESTERN MILLS AND POTTAWATTAMIE COUNTIES…

AT 1042 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM HARLAN TO 6 MILES NORTHEAST OF OAKLAND TO 4 MILES SOUTH OF TREYNOR…MOVING EAST AT 55 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

Severe Thunderstorm Warning: Shelby/Harrison/Mills/Pott Counties until 11:15-p.m.

Weather

August 23rd, 2016 by Ric Hanson

1027 PM CDT TUE AUG 23 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…SOUTHERN SHELBY COUNTY IN SOUTHWESTERN IOWA…SOUTHEASTERN HARRISON COUNTY IN SOUTHWESTERN IOWA…NORTHWESTERN MILLS COUNTY IN SOUTHWESTERN IOWA…POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA… UNTIL 1115 PM CDT

* AT 1027 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES WEST OF HARLAN TO 4 MILES SOUTHWEST OF AVOCA TO 7 MILES SOUTHWEST OF TREYNOR…MOVING EAST AT 25 MPH.

HAZARD…70 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

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

* LOCATIONS IMPACTED INCLUDE…

NORTHEASTERN COUNCIL BLUFFS…HARLAN…OAKLAND…AVOCA…TREYNOR…UNDERWOOD…CARSON…WALNUT…SHELBY…MINDEN…PERSIA…MACEDONIA…NEOLA…HANCOCK…PORTSMOUTH…MCCLELLAND…TENNANT…ARROWHEAD PARK…FARM CREEK PUBLIC WILDLIFE AREA AND NISHNA BEND RECREATION AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS…

HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 41 AND 73.

INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 8 AND 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

Severe Thunderstorm Warning: Shelby/Harrison/Mills/Pott. Counties

Weather

August 23rd, 2016 by Ric Hanson

1001 PM CDT TUE AUG 23 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR…SOUTHWESTERN SHELBY COUNTY IN SOUTHWESTERN IOWA…SOUTHEASTERN HARRISON COUNTY IN SOUTHWESTERN IOWA…NORTHWESTERN MILLS COUNTY IN SOUTHWESTERN IOWA…POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA…EASTERN DOUGLAS COUNTY IN EAST CENTRAL NEBRASKA…SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA…NORTHERN SARPY COUNTY IN EAST CENTRAL NEBRASKA…

* UNTIL 1030 PM CDT

* AT 1001 PM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINEEXTENDING FROM 3 MILES SOUTHWEST OF PERSIA TO NEAR SPRINGFIELD…MOVING EAST AT 40 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING…AND TREES.

* LOCATIONS IMPACTED INCLUDE…OMAHA…COUNCIL BLUFFS…BELLEVUE…PAPILLION…LA VISTA…RALSTON…GRETNA…SPRINGFIELD…AVOCA…TREYNOR… UNDERWOOD..SHELBY…MINDEN…MILLARD…OFFUTT AFB…CARTER LAKE…NEOLA..BOYS TOWN…CRESCENT AND SILVER CITY.

THIS INCLUDES THE FOLLOWING HIGHWAYS…

HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 61 AND 64.

HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 79 AND 99.

INTERSTATE 29 BETWEEN MILE MARKERS 39 AND 72.

INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 1 AND 34.

INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 432 AND 454.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

Flash Flood Warning: s.w Harrison & n.w. Pott. Counties in IA

Weather

August 23rd, 2016 by Ric Hanson

921 PM CDT TUE AUG 23 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLASH FLOOD WARNING FOR…SOUTHWESTERN HARRISON COUNTY IN SOUTHWESTERN IOWA…NORTHWESTERN POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA…EASTERN DODGE COUNTY IN EAST CENTRAL NEBRASKA…SOUTH CENTRAL BURT COUNTY IN EAST CENTRAL NEBRASKA…WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA… UNTIL 115 AM CDT

* AT 920 PM CDT…DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN IN SOME SPOTS. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE… FREMONT…BLAIR…MISSOURI VALLEY…ARLINGTON…HOOPER… NICKERSON…MODALE…UEHLING…HERMAN…WINSLOW… DESOTO BEND NATIONAL WILDLIFE REFUGE AND WILSON ISLAND STATE PARK.

Severe Thunderstorm Warning: Harrison & Pottawattamie Counties

Weather

August 23rd, 2016 by Ric Hanson

901 PM CDT TUE AUG 23 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…SOUTHWESTERN HARRISON COUNTY IN SOUTHWESTERN IOWA…NORTHWESTERN POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA…WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA… UNTIL 945 PM CDT

* AT 901 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR BLAIR…OR 17 MILES NORTH OF OMAHA…MOVING NORTHEAST AT 10 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…

BLAIR…ARLINGTON…FORT CALHOUN…KENNARD…WASHINGTON…DESOTO BEND NATIONAL WILDLIFE REFUGE AND WILSON ISLAND STATE PARK.

THIS INCLUDES THE FOLLOWING HIGHWAYS…

HIGHWAY 30 IN IOWA BETWEEN MILE MARKERS 1 AND 5.

HIGHWAY 30 IN NEBRASKA BETWEEN MILE MARKERS 435 AND 450.

HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 102 AND 123.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM…AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

Special Weather Statement: southwestern Pott. County

Weather

August 23rd, 2016 by Ric Hanson

POTTAWATTAMIE IA-DOUGLAS NE-

611 PM CDT TUE AUG 23 2016

SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN POTTAWATTAMIE AND EASTERN DOUGLAS COUNTIES UNTIL 630 PM CDT…AT 611 PM CDT…DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER SOUTHEASTERN OMAHA…MOVING NORTH AT 50 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE…OMAHA…NORTHWESTERN COUNCIL BLUFFS…RALSTON…CARTER LAKE…BENNINGTON…BOYS TOWN AND NARROWS RIVER PARK.

THIS INCLUDES THE FOLLOWING HIGHWAYS…

HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 88 AND 99.

INTERSTATE 29 BETWEEN MILE MARKERS 52 AND 61.

INTERSTATE 80 IN IOWA NEAR MILE MARKER 1.

INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 446 AND 454.

Skyscan forecast & weather data for Atlantic: 8/23/16

Weather

August 23rd, 2016 by Ric Hanson

Today: P/Cldy to Cldy w/a 30% chance of mid-afternoon showers & thunderstorms. High 83. S @ 15-25.
Tonight: Mo. Cldy w/a 70% chance of showers & thunderstorms. Low 68. S@10. New rainfall amounts between 1 and 2 inches possible.
Wednesday: Mo. Cldy w/a 40% chance of afternoon showers & tstrms. High 80. NW @ 5-10. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night: A 30% chance of showers & thunderstorms. Low around 61.
Thursday: Partly Cldy to Cldy, with a high near 80.
Friday: P/Cldy. High 82.  

Monday’s High in Atlantic was 81. Our 24-hours Low (ending today at 7-a.m.), was 61. Last year on this date, our High in Atlantic was 70 and the low was 42. The Record High in Atlantic on this date was 99 in 1894. The Record Low was 36 in 1891.

Hazardous Weather Outlook for far west/s.w. IA & parts of eastern NE (8/23)

Weather

August 23rd, 2016 by Ric Hanson

IOWA COUNTIES: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE; 555 AM CDT TUE AUG 23 2016

TODAY AND TONIGHT: STRONG TO SEVERE STORMS WILL BE POSSIBLE TODAY AND TONIGHT.  LIGHTNING…LARGE HAIL…DAMAGING WINDS AND HEAVY RAIN ARE THE MAIN HAZARDS, HOWEVER AN ISOLATED TORNADO IS ALSO POSSIBLE.

AN UPPER LEVEL WEATHER DISTURBANCE WITH LIFT ACROSS THE AREA
TODAY WITH DEEP MOISTURE POOLING AHEAD OF A COLD FRONT. INITIALLY STORMS SHOULD BE ELEVATED AND A STRONGER WIND SIGNAL LATER THIS MORNING AND EARLY THIS AFTERNOON IN NORTHEAST NEBRASKA COULD LEAD TO STORMS WITH STRONGER WINDS.

HEATING WILL ALSO OCCUR AND WIND SHEAR IS SUFFICIENT FOR AN ISOLATED TORNADO. A LOT WILL DEPEND ON HOW EXTENSIVE THE CLOUD COVER IS AND IF THERE ARE ANY LOW LEVEL BOUNDARIES TO HELP FOCUS ON. LOCALLY HEAVY RAIN WILL ALSO BE POSSIBLE AS A MOISTURE RICH ATMOSPHERE FEEDS INTO THE STORMS AND MULTIPLE ROUNDS OF STORMS ARE POSSIBLE.

WEDNESDAY THROUGH MONDAY: THE SLIGHT RISK FOR SEVERE STORMS WILL CONTINUE WEDNESDAY IN SOUTHEAST NEBRASKA AND SOUTHWEST IOWA ALONG WITH HEAVY RAIN.  THUNDERSTORM CHANCES RETURN FRIDAY INTO MONDAY WITH A GOOD CHANCE FOR STORMS FRIDAY NIGHT AND SATURDAY AGAIN MONDAY.

.SPOTTER INFORMATION STATEMENT…

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND TONIGHT.