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Weather officials expect more storms in Iowa

News, Weather

May 12th, 2014 by Ric Hanson

DES MOINES, Iowa (AP) – Forecasters say much of central and eastern Iowa could be affected by another wave of severe weather moving across the state.  The National Weather Service says a system expected to cross central Iowa early Monday evening could cause large hail, damaging winds and tornadoes.

Meteorologist Kurt Kotenberg says the eastern third of the state is at greatest risk, especially parts of southeast Iowa. However, he says the storm shouldn’t be as powerful as the one that moved through Iowa on Sunday night. He says large hail is the primary concern.

Sunday’s storms damaged buildings near Panora.

(Podcast) Skyscan Forecast: Mon., May 12th 2014

Podcasts, Weather

May 12th, 2014 by Ric Hanson

The Freese-Notis weather forecast for the KJAN listening area and weather data for Atlantic.

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Flood warning for Adair County cancelled

Weather

May 12th, 2014 by Ric Hanson

ADAIR IA-
532 AM CDT MON MAY 12 2014

…THE FLASH FLOOD WARNING FOR ADAIR COUNTY IS CANCELLED…

THE HEAVY RAIN HAS ENDED AND ANY FLOOD WATERS HAVE RECEDED.
THEREFORE…FLASH FLOODING NO LONGER IS EXPECTED TO POSE A THREAT TO
LIFE OR PROPERTY. HOWEVER…PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.

Damage assessment teams heading to Guthrie and Dallas Counties

News, Weather

May 12th, 2014 by Ric Hanson

Damage assessment teams were scheduled to arrive in Guthrie and Dallas Counties this (Monday) morning, to try and determine whether extensive storm damage was caused by straight-line winds or a tornado.

Buildings were damaged by a storm that roared through the Lake Panorama area near Panora, in Guthrie County. Authorities say at least eight condominiums at the lake were damaged Sunday night, but no injuries were reported. One man who took shelter in a condo bathroom was found unharmed. If it’s determined a tornado resulted in the damage, the twister will be given a rating based on the Enhanced Fujita scale.

The severe thunderstorms that impacted western Iowa late Sunday evening and overnight, began Sunday afternoon in south-central Nebraska. They took about three-hours to move into the Omaha/Council Bluffs metro area, but during that time frame they brought several tornadoes, hail and heavy rain, and left thousands without power. Homes and businesses were damaged in at least four Nebraska towns. The storms also left nearly 17,000 Nebraska utility customers without electricity Sunday evening. By the time the initial storms reached Omaha, the storms still produced winds over 70 mph and heavy winds, with radar indicated but no official sightings of tornadoes.

The storms crossed into western Iowa by 7-p.m., resulted in the first warnings for severe weather in Pottawattamie and Mills Counties. As they spread across southwest and western Iowa, the storms left baseball-sized hail in Fremont County, and brought 60-mile per hour winds to an area just east of Marne. The storms also dumped rain ranging from just under 1.5-inches in Shenandoah to as much as 3.5-to 4-inches in the Avoca and Lewis areas.

The area last storm warning was for Flash Flooding in Adair County. It was issued today (Monday) at 12:30-a.m.

Here’s a list of the damage and storm reports in the chronological order they took place, as received by the NWS.:

11:05-p.m. Thunderstorm wind damage 2 miles nw of Panora: Outbuilding destroyed, roof thrown 40-yards.

10:38-p.m. 3-miles NE of Yale in Guthrie County: Large tree snapped in-half.

10:30-p.m. 2 miles s of Red Oak, golf ball-sized hail.

10:22-p.m. Rainfall in Atlantic since 7-a.m Sunday 1.6-inches. (24-hour total as of 7-am Monday was 2.18″.)

10:10-p.m. Thunderstorm wind damage in Panora: structural damage to a home at Lake Panorama & possible damage between Yale and Panora.

10:00-p.m. Half-dollar sized hail in Randolph (Fremont County)

9:55-p.m. T-storm wind damage 2 miles w/nw of Panora: 2 1/2′ diameter trees uprooted; dock destroyed; numerous trees down.; funnel cloud spotted 3 miles nw of Panora at the same time.

9:45-p.m.  Baseball-sized hail 2 miles west of Thurman in Fremont County

9:42-p.m. Golf ball-sized hail 2 miles west of Thurman

9:40-p.m. Quarter-sized hail 6 miles w/sw of Thurman.

9:26-p.m. Street flooding reported in Atlantic

8:58-p.m. 60-mph thunderstorm wind gust 1 mile w/nw of Marne in Cass County.

8:15-p.m.  4.10″ of rain reported by a trained weather service spotter in Griswold.

Rainfall reports: Mon., May 12th 2014

Weather

May 12th, 2014 by Ric Hanson

24-hour rainfall in Atlantic ending at 7-a.m today at the KJAN studios (A National Weather Service reporting station) amounted to 2.18-inches. 1 inch of rain has fallen since 10-p.m. Sunday. Other (Official and Unofficial reports):

4.0″ in Lewis; 3.64″ 3 miles south of Avoca; 3.5″ in Oakland; 3.48″ 3 miles s.w. of Castana (Monona County); 3.25″ in Glenwood; 2.96″ in Underwood; 2.89″ at Irwin & Massena; 2.7″ in Villisca; 2.6″ in Castana; 2.51″ in Mapleton (Monona County); 2.32″ in Red Oak; 2.3″ south of Atlantic & 1 mile south of Avoca; 2.29″ in Logan (Harrison County); 2 inches in Audubon and in Randolph; 1.75″ in Clarinda; 1.48″ in Shenandoah. A trained weather service spotter reported 4.15-inches of rain had fallen by 8:15-p.m. Sunday, 1 mile northwest of Griswold.

If you have rainfall amounts to report, submit them to KJAN at 1-800-283-5526, 243-3920 (in Atlantic), or by e-mail to kjannews@metc.net.   Please let us know where the measurement was taken (your location), the time of measurement and if it is a 24-hour total or weekend amount. Also, note any hail or severe storm damage that may have occurred. Thanks for your input!

NWS forecast for Cass & area Counties: Mon., 5/12/2014

Weather

May 12th, 2014 by Ric Hanson

331 AM CDT MON MAY 12 2014

A FLASH FLOOD WATCH is IN EFFECT UNTIL 7 AM CDT THIS MORNING; A FLASH FLOOD WARNING IS IN EFFECT UNTIL 6:30-A.M FOR ADAIR COUNTY.

EARLY THIS MORNING…NUMEROUS THUNDERSTORMS. SOME THUNDERSTORMS MAY BE SEVERE WITH DAMAGING WIND…LARGE HAIL AND HEAVY RAINFALL. EAST WIND 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH. CHANCE OF THUNDERSTORMS 70 PERCENT.

TODAY…CLOUDY…COOLER. SCATTERED THUNDERSTORMS THROUGH MID MORNING…THEN NUMEROUS THUNDERSTORMS IN THE LATE MORNING AND EARLY AFTERNOON. SCATTERED THUNDERSTORMS LATE IN THE AFTERNOON. HIGH IN THE UPPER 60S. SOUTHWEST WIND 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH. CHANCE OF THUNDERSTORMS 70 PERCENT.

TONIGHT…MOSTLY CLOUDY. ISOLATED THUNDERSTORMS THROUGH MIDNIGHT. BREEZY…COLDER. LOW IN THE LOWER 40S. NORTHWEST WIND 10 TO 20 MPH. CHANCE OF THUNDERSTORMS 20 PERCENT.

TUESDAY…PARTLY SUNNY. HIGH IN THE LOWER 60S. NORTHWEST WIND 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.

TUESDAY NIGHT...MOSTLY CLOUDY. LOW AROUND 40. NORTHWEST WIND 5 TO 10 MPH. GUSTS UP TO 20 MPH THROUGH MIDNIGHT.

WEDNESDAY…MOSTLY SUNNY. A 20 PERCENT CHANCE OF LIGHT SHOWERS IN THE AFTERNOON. HIGH IN THE LOWER 60S. NORTH WIND 5 TO 10 MPH.

THURSDAY…PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS. HIGH IN THE UPPER 50S.

Flash Flood Warning until 6:30-a.m. for Adair County

Weather

May 12th, 2014 by Ric Hanson

337 AM CDT MON MAY 12 2014

A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR ADAIR COUNTY.

WHILE THUNDERSTORMS AND HEAVY RAINFALL HAVE MOVED OUT OF THE WARNED AREA…THE THREAT FOR LOCALIZED FLASH FLOODING STILL EXISTS. UP TO TWO INCHES OF RAIN FELL ACROSS THE COUNTY AND ADDITIONAL THUNDERSTORMS MAY TRACK ACROSS THE WARNED AREA THROUGH THE EARLY MORNING HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. TURN AROUND…DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.

Flash Flood Watch Continues until 7-a.m. today (5/12)

Weather

May 12th, 2014 by Ric Hanson

337 AM CDT MON MAY 12 2014

…THUNDERSTORMS TO PRODUCE LOCALLY HEAVY RAIN EARLY TODAY…

.SCATTERED THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL HAVE REDEVELOPED OVER WESTERN IOWA. THESE STORMS COULD BRING ANOTHER 1 TO 2 INCHES OF RAINFALL IN SOME SPOTS WITH RAINFALL RATES NEAR 2 INCHES PER HOUR AS HEAVIER STORMS MOVE THROUGH.

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

FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING

* THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL EARLY THIS MORNING. LOCALIZED AMOUNTS OF TWO INCHES MAY OCCUR. THIS WILL LEAD TO THE POTENTIAL FOR FLASH FLOODING…PARTICULARLY IN URBAN AND HILLY AREAS.

* FLASH FLOODING WILL POSE A DANGER TO ANYONE NEAR WATERWAYS AND LOW LYING AREAS…AND MAY AFFECT TRAVEL AS SOME ROADS COULD BE FLOODED.

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.

FLASH FLOOD WARNING UPDATE:

Weather

May 11th, 2014 by Ric Hanson

CRAWFORD IA-CASS IA-CARROLL IA-AUDUBON IA-
1057 PM CDT SUN MAY 11 2014

…THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 AM CDT MONDAY
FOR SOUTHEASTERN CRAWFORD…CASS…SOUTHWESTERN CARROLL AND AUDUBON
COUNTIES…

AT 1056 PM CDT…DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
ALREADY FALLEN.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…
ATLANTIC…AUDUBON…MANNING…GRISWOLD…ANITA…EXIRA…MANILLA…
ELK HORN…LEWIS…TEMPLETON…MASSENA…KIMBALLTON…DEDHAM…
CUMBERLAND…HALBUR…BRAYTON…MARNE…WIOTA…GRAY AND ASPINWALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

Severe Thunderstorm Warning: Southern Cass/Western Adams Counties

Weather

May 11th, 2014 by Ric Hanson

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1045 PM CDT SUN MAY 11 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHERN CASS COUNTY IN SOUTHWEST IOWA…
WESTERN ADAMS COUNTY IN SOUTHWEST IOWA…

* UNTIL 1130 PM CDT

* AT 1044 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR STANTON…
OR 18 MILES WEST OF CORNING…MOVING EAST AT 35 MPH.

HAZARD…60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.

SOURCE…RADAR INDICATED.

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

* LOCATIONS IMPACTED INCLUDE…
CORNING…LAKE ICARIA…MASSENA…CUMBERLAND…NODAWAY…CARBON…
LAKE ICARIA STATE PARK AND CORNING MUNICIPAL AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT MONDAY MORNING FOR
IOWA.

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

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