AREA COUNTIES: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT- PAGE– 11:43 AM CDT TUE MAY 28 2013

THIS AFTERNOON AND TONIGHT… THUNDERSTORMS…SOME SEVERE, ARE AGAIN POSSIBLE LATE  THIS AFTERNOON AND OVERNIGHT. DAMAGING WINDS…LARGE HAIL…AND LOCALLY HEAVY RAIN WILL BE THE PRIMARY HAZARDS. A SHORT REPRIEVE FROM THE THUNDERSTORMS AND HEAVY RAIN WILL HOLD  AT LEAST INTO MID AFTERNOON.

THE STORMS FROM LAST NIGHT WORKED  OVER THE ENVIRONMENT…ESPECIALLY NORTH PARTS OF THE FORECAST AREA…WHERE THE OUTFLOW BOUNDARY WAS STILL VERY EVIDENT JUST ALONG AND SOUTH OF I80. THIS REMAINS THE AREA WHERE WE COULD SEE
 THUNDERSTORMS DEVELOP AS TEMPERATURES WARM INTO THE THE UPPER 70’S AND LOWER 80’S. ANOTHER BOUNDARY WAS LOCATED OVER SOUTHEAST NEBRASKA INTO SOUTHWEST IOWA.  THUNDERSTORMS WILL LIKELY FORM ALONG THIS BOUNDARY LATER THIS AFTERNOON.

OVERNIGHT…A LOW LEVEL JET SYSTEM WILL DEVELOP AND DEEPER MOISTURE RETURNS TO THE OUTLOOK AREA…THUS FAVORABLE CONDITIONS FOR THUNDERSTORMS TO DEVELOP. DAMAGING WINDS…HAIL…AND LOCALLY HEAVY RAIN WILL BE THE PRIMARY HAZARDS. CONDITIONS OF AREA STREAMS AND RIVERS THAT ARE ALREADY RUNNING
HIGH MAY WORSEN WITH ADDITIONAL HEAVY RUNOFF FROM HEAVY RAINFALL. 
 
WEDNESDAY THROUGH MONDAY…PERIODS OF THUNDERSTORMS ARE POSSIBLE WEDNESDAY THROUGH FRIDAY OF THIS WEEK. SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAIN ARE POSSIBLE FROM ANY OF THE ACTIVITY.
 
SPOTTER INFORMATION STATEMENT… SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND TONIGHT.

Flood warnings or flash flood watches are now posted in 92 of Iowa’s 99 counties. Many roads are washed over and closed, including about a dozen state and U-S highways. National Weather Service meteorologist Roger Vachalek says more rain’s coming. “We’ll have to keep our eye on the possibility of more heavy rainfall, especially tonight and tomorrow and over the next couple of days,” Vachalek says. “The actual system that’s producing all of this rain is not going to move east until about Friday afternoon or evening.”

Some areas of Iowa have gotten eight inches of rain since Friday. The 24-hour rainfall total in Atlantic (ending today at 7-a.m.) was .2″ (two-tenths of an inch). Our 48-hour total at the KJAN studios was 1.15″. 

Massena reports a 24-hour rainfall total of .54″. Other, unofficial 24-hour rainfall amounts include: .”25 near Avoca; .3″ in Oakland; 1.04″ at Malvern; .84 at Hamburg; .35″ in Audubon. Weekend totals in 3/3″ in Clarinda, 2.95″ in Audubon, and 2.85″ in Red Oak.

(Radio Iowa/KJAN)

AREA COUNTIES: AUDUBON-GUTHRIE-CASS-ADAIR-ADAMS-
722 AM CDT TUE MAY 28 2013

…PATCHY DENSE FOG TUESDAY MORNING…

AREAS OF PATCHY DENSE FOG WILL PERSIST ACROSS THE AREA THROUGH
EARLY TUESDAY MORNING. VISIBILITIES MAY BE REDUCED TO A QUARTER OF
A MILE OR LESS AT TIMES. USE CAUTION WHILE DRIVING.

The weather pattern will remain the same for the next several days with chances for additional thunderstorms increasing again later this afternoon and tonight. Some thunderstorms early this morning over Central Iowa may bring some brief heavy rainfall…but the focus will shift to the southern half of the region again tonight as both a threat for heavy rainfall and a slight risk of severe weather returns. A stronger storm will move into the region later Wednesday evening and Thursday keeping thunderstorm chances in the forecast through Friday.

Here’s the Freese-Notis (podcast) weather forecast for Atlantic & the KJAN listening area, and weather information for Atlantic from KJAN News Director Ric Hanson….

Podcast: Play in new window | Download (1.1MB)

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Today: **FLASH FLOOD WATCH UNTIL NOON**  Isolated showers and thunderstorms before 10am, then isolated showers and thunderstorms after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. South southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 66. South wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Breezy, with a south wind 11 to 20 mph, with gusts as high as 24 mph. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night: Showers and thunderstorms likely, mainly after 1am. Cloudy, with a low around 66. Breezy, with a south wind 15 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday: Showers and thunderstorms likely. Cloudy, with a high near 77. Breezy, with a south wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Friday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.

Saturday: Mostly sunny, with a high near 74.

COUNTIES: CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD…

338 AM CDT TUE MAY 28 2013

…FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL NOON CDT TODAY…

THUNDERSTORMS WILL CONTINUE ACROSS CENTRAL IOWA THROUGH THE EARLY MORNING HOURS. THUNDERSTORMS WILL BECOME MORE SCATTERED THROUGH THE MORNING…HOWEVER STORMS WILL STILL BE CAPABLE OF PRODUCING HEAVY RAINFALL…AND MAY TRACK OVER AREAS WHICH HAVE ALREADY RECEIVED RAINFALL OVERNIGHT. HEAVY RAIN WILL FALL ON ALREADY SATURATED SOIL FROM EARLIER HEAVY RAINFALL EVENTS OF THE WEEKEND AND OVERNIGHT MONDAY. HEAVY RAIN ON SATURATED GROUND WOULD CAUSE FLASH FLOODING FAIRLY QUICKLY AND WOULD BE LIFE THREATENING.

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.

WATCH COUNTY NOTIFICATION FOR WATCH 232/ NATIONAL WEATHER SERVICE OMAHA/VALLEY NE

1202 AM CDT TUE MAY 28 2013

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 232 FOR THE FOLLOWING AREAS…IN IOWA THIS CANCELS 2 COUNTIES IN SOUTHWEST IOWA FREMONT & PAGE. THIS INCLUDES THE CITIES OF…CLARINDA…FARRAGUT…HAMBURG…SHENANDOAH…SIDNEY AND TABOR.

SEVERE WEATHER STATEMENT/NATIONAL WEATHER SERVICE DES MOINES IA

1148 PM CDT MON MAY 27 2013 TAYLOR IA-RINGGOLD IA-ADAMS IA-

…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN ADAMS…WESTERN RINGGOLD AND TAYLOR COUNTIES UNTIL 1230 AM CDT… AT 1142 PM CDT…A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTHEAST OF CLARINDA TO 13 MILES SOUTHWEST OF GRANT CITY…AND MOVING NORTHEAST AT 40 MPH. HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED. IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES. THIS STORM HAD A HISTORY OF DAMAGING WINDS AS IT MOVED ACROSS NORTHWEST MISSOURI. LOCATIONS IMPACTED INCLUDE… BEDFORD…CORNING…LENOX…NODAWAY…GRAVITY…ATHELSTAN…CONWAY…SHARPSBURG…BLOCKTON…REDDING…MALOY…CLEARFIELD…PRESCOTT…DELPHOS AND BENTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DES MOINES. TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS…AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA

1139 PM CDT MON MAY 27 2013

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A FLASH FLOOD WARNING FOR…CENTRAL MONTGOMERY COUNTY IN SOUTHWEST IOWA… UNTIL 245 AM CDT

* AT 1132 PM CDT…DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…RED OAK. ADDITIONAL RAINFALL AMOUNTS OF 1 INCH ARE POSSIBLE IN THE WARNED AREA IN THE NEXT HOUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND.