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NWS forecast for Cass & area Counties in IA: 7/7/16

Weather

July 7th, 2016 by Ric Hanson

SEVERE THUNDERSTORM WATCHES ARE EFFECT THIS MORNING (See the separate posts listed on the kjan.com Weather page)

EARLY THIS MORNING…MOSTLY CLOUDY. SCATTERED THUNDERSTORMS. SOME MAY BE SEVERE, WITH THE PRIMARY THREAT BEING DAMAGING WINDS UP TO 70MPH, AND HAIL. LOW AROUND 70. SOUTHEAST WIND 5 TO 10 MPH. CHANCE OF THUNDERSTORMS 60 PERCENT.

TODAY…PARTLY SUNNY WITH SCATTERED THUNDERSTORMS. HIGH IN THE UPPER 80S. SOUTH WIND 10 TO 15 MPH. CHANCE OF THUNDERSTORMS 40 PERCENT.

TONIGHT…MOSTLY CLOUDY IN THE EVENING THEN CLEARING. A 50 PERCENT CHANCE OF THUNDERSTORMS UNTIL EARLY MORNING. LOW IN THE MID 60S. NORTHWEST WIND 5 TO 10 MPH.

FRIDAY…SUNNY. HIGH IN THE MID 80S. NORTHWEST WIND 5 TO 15 MPH.

SATURDAY…MOSTLY SUNNY. HIGH IN THE MID 80S.

SUNDAY…MOSTLY SUNNY WITH A 20 PERCENT CHANCE OF  THUNDERSTORMS. HIGH IN THE MID 80S.

Significant Weather Advisory for Harrison/Shelby/Mills/Pott Counties

Weather

July 7th, 2016 by Ric Hanson

112 AM CDT THU JUL 7 2016
UNTIL 2:00 AM CDT… AT 1:11 AM CDT…DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES NORTHWEST OF IRWIN TO 5 MILES SOUTH OF MEAD…AND MOVING SOUTHEAST AT 25 MPH. WIND GUSTS UP TO AROUND 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE… OMAHA…COUNCIL BLUFFS…BELLEVUE…PAPILLION…LA VISTA… PLATTSMOUTH…RALSTON…GLENWOOD…HARLAN…GRETNA… MISSOURI VALLEY…ASHLAND…VALLEY…LOGAN…SPRINGFIELD…OAKLAND… AVOCA…YUTAN…LOUISVILLE AND WEEPING WATER.

THESE STORMS 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. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT.

Severe Thunderstorm Watch area expanded

Weather

July 7th, 2016 by Ric Hanson

SEVERE THUNDERSTORM WATCH 345 IS IN EFFECT UNTIL 900 AM CDT FOR THE FOLLOWING COUNTIES IN IOWA: ADAMS FREMONT MILLS MONTGOMERY PAGE POTTAWATTAMIE RINGGOLD TAYLOR and UNION.

Severe Thunderstorm Watch in effect until 7-a.m. Thursday

Weather

July 7th, 2016 by Ric Hanson

1245 AM CDT THU JUL 7 2016

SEVERE THUNDERSTORM WATCH 344 IS IN EFFECT UNTIL 700 AM CDT FOR THE FOLLOWING COUNTIES IN THE KJAN LISTENING AREA: ADAIR AUDUBON CARROLL CASS  CRAWFORD DALLAS GUTHRIE MADISON  and SAC. Watch344

* PRIMARY THREATS INCLUDE…

ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE.

PROBABILITY TABLE:

PROB OF 2 OR MORE TORNADOES : <05%

PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : <02%

PROB OF 10 OR MORE SEVERE WIND EVENTS : 30%

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

PROB OF 10 OR MORE SEVERE HAIL EVENTS : 10%

PROB OF 1 OR MORE HAIL EVENTS > 2 INCHES : 10%

PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 60%

 

Hazardous Weather Outlook for far west/s.w. IA

Weather

July 6th, 2016 by Ric Hanson

MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT- PAGE COUNTIES

346 PM CDT WED JUL 6 2016

DAY ONE…TONIGHT AND THURSDAY: THUNDERSTORMS DEVELOPING OVER THE HIGH PLAINS THIS AFTERNOON WILL MERGE INTO A LARGE COMPLEX AND ACCELERATE EAST INTO THE AREA LATE THIS EVENING INTO TONIGHT. THE HIGHEST LIKELIHOOD FOR SEVERE WEATHER IS EXPECTED ACROSS NORTHEAST NEBRASKA…MAINLY NORTH OF A NELIGH TO WAYNE TO SIOUX CITY LINE. HOWEVER…WIDELY SCATTERED SEVERE STORMS ARE POSSIBLE ACROSS THE REMAINDER OF EASTERN NEBRASKA AND SOUTHWEST IOWA WITH DAMAGING WINDS…HAIL AND LOCALLY HEAVY RAINFALL ALL POSSIBLE. ADDITIONAL STORMS ARE EXPECTED TO DEVELOP AHEAD OF A COLD FRONT MOVING THROUGH THE AREA ON THURSDAY. WHILE ORGANIZED SEVERE WEATHER IS NOT EXPECTED…A COUPLE OF STRONG TO MARGINALLY SEVERE STORMS ARE POSSIBLE. .

DAYS TWO THROUGH SEVEN…THURSDAY NIGHT THROUGH WEDNESDAY: A CHANCE FOR THUNDERSTORMS WILL CONTINUE THIS WEEKEND THROUGH THE FIRST PART OF NEXT WEEK. CURRENTLY…IT APPEARS THAT THE BEST STORM CHANCES WILL BE MONDAY AND MONDAY NIGHT WHEN SOME SEVERE WEATHER IS POSSIBLE. .

SPOTTER INFORMATION STATEMENT… SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT OR THURSDAY.

Hazardous Weather Outlook for parts of western/southwest IA

Weather

July 6th, 2016 by Ric Hanson

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

355 PM CDT WED JUL 6 2016

DAY ONE…THIS AFTERNOON AND TONIGHT: THUNDERSTORMS ARE LIKELY AFTER MIDNIGHT TONIGHT…ESPECIALLY NORTH OF INTERSTATE 80. THE PRIMARY THREAT IS DAMAGING WIND. IN ADDITION…HAIL…HEAVY RAIN AND LOCALIZED FLOODING ARE ALSO POSSIBLE. .

DAYS TWO THROUGH SEVEN…THURSDAY THROUGH TUESDAY: THUNDERSTORMS ARE LIKELY ON THURSDAY ESPECIALLY IN THE LATE AFTERNOON AND EVENING. THERE IS AN ENHANCED RISK OF SEVERE WEATHER WITH ALL MODES POSSIBLE…POTENTIALLY INCLUDING A FEW TORNADOES…ALONG WITH LOCALLY HEAVY RAINFALL. THURSDAY WILL ALSO BE WARM AND VERY HUMID. HEAT INDEX VALUES MAY REACH OR JUST EXCEED 100 DEGREES ACROSS SOUTHERN IOWA. THUNDERSTORM CHANCES WILL RETURN TO THE FORECAST FROM SUNDAY THROUGH THE MIDDLE OF NEXT WEEK…WITH THE HIGHEST CHANCES FROM LATE MONDAY INTO LATE TUESDAY. THE RISK OF SEVERE WEATHER IS UNCLEAR AT THIS TIME. .

SPOTTER INFORMATION STATEMENT… SPOTTER ACTIVATION COULD VERY WELL BE NEEDED THROUGH THURSDAY EVENING…ESPECIALLY TONIGHT AND AGAIN LATE THURSDAY.

Local Rainfall Totals at 7:00 am on Wednesday, July 6

Ag/Outdoor, Weather

July 6th, 2016 by Jim Field

  • KJAN, Atlantic  .01″
  • 7 Miles NNE of Atlantic  .02″
  • Elk Horn  .13″
  • Avoca  .25″
  • Oakland  .1″
  • Missouri Valley .04″
  • Logan  .04″
  • Irwin  .02″
  • Woodbine  1.63″
  • Sidney  .05″
  • Villisca  .16″

Severe storms cause damage in western IA overnight

News, Weather

July 6th, 2016 by Ric Hanson

Severe storms popped-up late Tuesday night and early this (Wednesday) morning across parts of western Iowa, bringing winds gusting up to 75-mph, and heavy rain. The National Weather Service reports thunderstorm winds caused power lines to fall in the Crawford County community of Schleswig just before 11-p.m.  Not long afterward, pea size hail fell, and winds blowing at an estimated 75-mph, caused tree damage at the Denison Airport.

Similar winds of 60-to 70mph caused trees to fall in the Sac County town of Lake View just before 11:30-p.m., Tuesday. Quarter-size hail fell on Aracadia at around 11:30-p.m., while winds gusted up to 65-mph.  And, just before midnight, winds estimated at 59-mph were measured by an automated weather site two-miles north/northwest of Carroll.

Early this morning, the Weather Service issued an Urban and Small Stream Flood Advisory (Until 8:45-a.m.), for western Montgomery, Mills, and south central Pottawattamie Counties. Doppler radar indicated as much as 3-inches of rain had fallen over the area, causing some minor flooding.

Skyscan forecast & weather data for Atlantic: 7/6/16

Weather

July 6th, 2016 by Ric Hanson

Today: Showers & thunderstorms this morning; P/Cldy, warm & humid. High 91. SE @ 10-15. .

Tonight: Scatt. Showers & tstrms. Low 73. SE @ 10.

Tomorrow: Variably Cldy w/scatt shwrs & tstrms. SE @ 10-15.High 88.

Friday: P/Cldy. Less humid High 85.

Saturday: P/Cldy. High 85.

Tuesday’s High in Atlantic was 88. Our 24-hour Low thru 7-a.m. today was 68. We received a trace of rain this morning, between 6-and 7-a.m. at the KJAN studios. Last year on this date, our High in Atlantic was 76 and the low was 52. The All-time Record High in Atlantic on this date was 106 in 1937. The Record Low was 47 in 1967 & 2006.

Urban & Small Stream Flood Advisory: Montgomery/Mills/Pott. Counties

Weather

July 6th, 2016 by Ric Hanson

550 AM CDT WED JUL 6 2016

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLOOD ADVISORY FOR…WESTERN MONTGOMERY COUNTY IN SOUTHWESTERN IOWA…MILLS COUNTY IN SOUTHWESTERN IOWA…
SOUTH CENTRAL POTTAWATTAMIE COUNTY IN SOUTHWESTERN IOWA…

* UNTIL 845 AM CDT

* AT 550 AM CDT…DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
THUNDERSTORMS. THIS WILL CAUSE MINOR FLOODING IN THE ADVISORY AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…
RED OAK…GLENWOOD…MALVERN…STANTON…PACIFIC JUNCTION…
EMERSON…MACEDONIA…SILVER CITY…HENDERSON…HASTINGS…
COBURG AND OLD TOWN PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE…TURN AROUND…DONT DROWN.