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SEVERE THUNDERSTORM WATCH #373 HAS EXPIRED

Weather

July 11th, 2016 by Ric Hanson

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 373

NWS STORM PREDICTION CENTER NORMAN OK

1003 PM CDT MON JUL 11 2016

SEVERE THUNDERSTORM WATCH 373 IS NO LONGER IN EFFECT. THE WATCH HAD COVERED HARRISON MONONA POTTAWATTAMIE and SHELBY COUNTIES.

 

Special Weather Statement: Audubon/Cass/Adair Counties

Weather

July 11th, 2016 by Ric Hanson

GUTHRIE IA-AUDUBON IA-CASS IA-CARROLL IA-ADAIR IA-GREENE IA

945 PM CDT MON JUL 11 2016

…LINE OF STORMS MAY PRODUCE WIND GUSTS OF 40 TO 50 MPH…

AT 944 PM CDT…DOPPLER RADAR WAS TRACKING STRONG  THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR COON RAPIDS TO 8 MILES NORTHEAST OF ATLANTIC. MOVEMENT WAS EAST AT 40 MPH. WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE…

AUDUBON…GUTHRIE CENTER…COON RAPIDS…LAKE PANORAMA…ANITA… EXIRA…ADAIR…ELK HORN…BAYARD…CASEY…KIMBALLTON…BAGLEY… DEDHAM…YALE…BRAYTON…SPRINGBROOK STATE PARK AND AUDUBON COUNTY AIRPORT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR WEST CENTRAL IOWA.

Severe Thunderstorm Watch #372 extended & now includes Audubon County

Weather

July 11th, 2016 by Ric Hanson

SEVERE THUNDERSTORM WATCH 372 REMAINS IN EFFECT UNTIL 1100 PM CDT FOR THE FOLLOWING AREA COUNTIES: AUDUBON CARROLL CRAWFORD SAC.

Severe Thunderstorm Watch #373 for parts of western IA

Weather

July 11th, 2016 by Ric Hanson

405 PM CDT MON JUL 11 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A  SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EXTREME WEST CENTRAL IOWA.  IOWA COUNTIES INCLUDED ARE: HARRISON MONONA POTTAWATTAMIE and SHELBY. EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 405 PM UNTIL 1000 PM CDT. 373

* PRIMARY THREATS INCLUDE…

SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY…THUNDERSTORMS ARE EXPECTED TO DEVELOP IN A GENERAL

NORTH-SOUTH BAND FROM NEBRASKA INTO NORTHERN KANSAS OVER THE NEXT FEW HOURS. DAMAGING WINDS AND LARGE HAIL WILL BE THE MAIN CONCERNS THROUGH LATE EVENING.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHWEST OF TEKAMAH NEBRASKA TO 20 MILES SOUTHWEST OF CONCORDIA KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

PRECAUTIONARY/PREPAREDNESS ACTIONS

REMEMBER…A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES.

Severe Thunderstorm Watch for parts of n.w./western IA

Weather

July 11th, 2016 by Ric Hanson

345 PM CDT MON JUL 11 2016

SEVERE THUNDERSTORM WATCH 372 IS IN EFFECT UNTIL 1000 PM CDT

FOR THE FOLLOWING LOCATIONS: IOWA COUNTIES INCLUDED ARE

BUENA VISTA CALHOUN CARROLL CHEROKEE CLAY CRAWFORD DICKINSON EMMET HUMBOLDT IDA KOSSUTH LYON O’BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS SAC SIOUX WEBSTER WOODBURY.

Watch #372. Counties in purple.

Watch #372. Counties in purple.

* PRIMARY THREATS INCLUDE…

SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

INCHES IN DIAMETER POSSIBLE.

SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE.

A TORNADO OR TWO POSSIBLE.

PROBABILITY TABLE:

PROB OF 2 OR MORE TORNADOES : 20%

PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 05%

PROB OF 10 OR MORE SEVERE WIND EVENTS : 50%

PROB OF 1 OR MORE WIND EVENTS > 75 MPH : 20%

PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40%

PROB OF 1 OR MORE HAIL EVENTS > 2 INCHES : 30%

PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90%

 

(Updated) Hazardous Weather Outlook for far west/s.w. IA (7/11)

Weather

July 11th, 2016 by Ric Hanson

MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE-1126 AM CDT MON JUL 11 2016

THIS AFTERNOON AND TONIGHT: SEVERE THUNDERSTORMS ARE PROBABLE THIS AFTERNOON AND EVENING AS A COLD FRONT MOVES INTO THE AREA. LARGE HAIL…DAMAGING WINDS AND ISOLATED TORNADOES ARE ALL POSSIBLE.

THUNDERSTORMS ARE EXPECTED TO DEVELOP IN NORTHEAST NEBRASKA BY MID AFTERNOON…AND THEN ADVANCE SOUTHEASTWARD ACROSS THE REST OF EASTERN NEBRASKA AND SOUTHWEST IOWA LATE THIS AFTERNOON AND EVENING. FAVORABLE INSTABILITY AND SHEAR PARAMETERS WILL BE IN PLACE ALLOWING FOR SUPERCELL DEVELOPMENT BEFORE MERGING INTO A LINE OF STORMS WITH DAMAGING WINDS BECOMING THE PRIMARY HAZARD. IN ADDITION LOCALLY HEAVY RAINFALL OF 2 INCHES OR MORE LIKELY OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA.

THE THREAT OF SEVERE WEATHER SHOULD BE ENDING BY MID EVENING IN
NORTHEAST NEBRASKA…BUT COULD PERSIST PAST MIDNIGHT IN EAST
CENTRAL AND SOUTHEAST NEBRASKA…AS WELL AS ALL OF SOUTHWEST IOWA.

BEFORE THE THE RAIN ARRIVES…ANOTHER HOT AND HUMID DAY IS
EXPECTED WITH AFTERNOON HEAT INDEX VALUES OF 100 TO 105 DEGREES
ALONG AND SOUTH OF INTERSTATE 80.

TUESDAY THROUGH SUNDAY: THERE IS A CHANCE FOR SEVERE THUNDERSTORMS AGAIN ON TUESDAY AND WEDNESDAY…MAINLY SOUTH OF INTERSTATE 80. THE COLD FRONT MOVING THROUGH MONDAY NIGHT IS FORECAST TO STALL JUST SOUTH OF THE AREA EARLY TUESDAY…THEN SURGE BACK NORTH INTO OUR AREA TUESDAY AFTERNOON AND WEDNESDAY. ADDITIONAL THUNDERSTORMS ARE POSSIBLE EACH DAY FRIDAY THROUGH
SUNDAY.

.SPOTTER INFORMATION STATEMENT

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

Enhanced risk of severe storms this evening

News, Weather

July 11th, 2016 by Ric Hanson

The Severe Storms Prediction Center in Norman, OK., has issued an Enhanced Risk of severe storms across portions of western and central Iowa for storms expected mainly this evening/overnight. Large hail and damaging winds are the main severe threats. Pay attention to the latest forecast for updates through the day/night on KJAN and on our Facebook and Twitter feeds.

SPC

Skyscan forecast & weather data for Atlantic: 7/11/16

Weather

July 11th, 2016 by Ric Hanson

Monday, July 11th 2016 Dan Hicks

 Today: P/Cldy, warm & humid. High 92. SW @ 10-20.

Tonight: P/Cldy to Cldy shwrs & tstrms. (Severe weather is possible) Low 73. S @ 5-10.

Tomorrow: Shwrs & tstrms early; Becoming P/Cldy. High 89. SE @ 10-15.

Wednesday: P/Cldy to Cldy w/scatt. Shwrs & tstrms. High 87.

Thursday: P/Cldy. Less humid. High around 85.

Sunday’s High in Atlantic was 87. Our 24-hour Low thru 7-a.m. today was 72. Last year on this date, our High in Atlantic was 80 and the low was 67. The All-time Record High in Atlantic on this date was 104 in 1936. The Record Low was 43 in 1895.

Hazardous Weather outlook for parts of western/southwest IA, 7/11/16

Weather

July 11th, 2016 by Ric Hanson

SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD COUNTIES….

TODAY AND TONIGHT: THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE AREA THIS EVENING AND INTO THE OVERNIGHT. A FEW STORMS MAY BE SEVERE WITH DAMAGING WIND GUSTS IN EXCESS OF 60 MPH AND HALF DOLLAR SIZED HAIL. THE STRONGEST STORMS ARE EXPECTED BETWEEN 7 PM AND MIDNIGHT. LOCALLY HEAVY RAINFALL MAY OCCUR.

ADDITIONAL THUNDERSTORMS ARE POSSIBLE TUESDAY AND WEDNESDAY WITH A FEW SEVERE STORMS AND LOCALLY HEAVY RAINFALL POSSIBLE. ADDITIONAL THUNDERSTORMS ARE FORECAST FOR NEXT WEEKEND.

SPOTTER INFORMATION STATEMENT… SPOTTER ACTIVATION MAY BE NEEDED AT TIMES TONIGHT THROUGH WEDNESDAY.

Hazardous Weather Outlook for far west/s.w. IA & eastern NE, 7/11/16

Weather

July 11th, 2016 by Ric Hanson

MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE COUNTIES IN IA; MON JUL 11 2016

TODAY AND TONIGHT: SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING AS A COLD FRONT MOVES INTO THE AREA. LARGE HAIL…DAMAGING WINDS AND ISOLATED TORNADOES ARE ALL POSSIBLE.

THUNDERSTORMS ARE FORECAST TO DEVELOP IN NORTHEAST NEBRASKA BY MID AFTERNOON…THEN SPREAD SOUTH AND EAST ACROSS THE REST OF EASTERN NEBRASKA AND SOUTHWEST IOWA LATE THIS AFTERNOON AND EVENING. SUFFICIENT INSTABILITY AND SHEAR PARAMETERS WILL EXIST FOR SUPERCELL STORMS THAT WILL BE CAPABLE OF PRODUCING ALL MODES OF SEVERE WEATHER. THE STORMS ARE EXPECTED TO MERGE INTO CLUSTERS OR LINES BY LATE EVENING WHEN TRAINING OF STORMS COULD PRODUCE LOCALLY HEAVY RAINFALL OF GREATER THAN 2 INCHES…LIKELY OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA.

THE THREAT OF SEVERE WEATHER SHOULD BE ENDING BY MID EVENING IN
NORTHEAST NEBRASKA…BUT COULD PERSIST PAST MIDNIGHT IN EAST
CENTRAL AND SOUTHEAST NEBRASKA…AS WELL AS ALL OF SOUTHWEST IOWA. BEFORE THE THE RAIN ARRIVES…ANOTHER HOT AND HUMID DAY IS
EXPECTED WITH AFTERNOON HEAT INDEX VALUES INCREASING TO 100 TO 105 DEGREES ALONG AND SOUTH OF INTERSTATE 80.

TUESDAY/WEDNESDAY: THERE IS A CHANCE FOR SEVERE THUNDERSTORMS AGAIN ON TUESDAY AND WEDNESDAY…MAINLY SOUTH OF INTERSTATE 80. THE COLD FRONT MOVING THROUGH MONDAY NIGHT IS FORECAST TO STALL JUST SOUTH OF THE AREA EARLY TUESDAY…THEN SURGE BACK NORTH INTO OUR AREA TUESDAY AFTERNOON AND WEDNESDAY.  ADDITIONAL THUNDERSTORMS ARE POSSIBLE EACH DAY FRIDAY THROUGH
SUNDAY.

SPOTTER INFORMATION STATEMENT: SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.