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Snow in May…in Iowa?

News, Weather

May 1st, 2013 by Ric Hanson

Snow is forecast across portions of Iowa between late today (Wednesday) and early Friday of this week, with accumulating snow possible especially in the north and west. Snowfall in Iowa in May is unusual, but far from unprecedented. According to data from the State
Climatologist office snow has fallen in May in 59 of the last 125 years, or 47% of the time, but it has only occurred in five of the last 20 years. Most of the events were characterized by isolated flurries with trace amounts at only a couple of reporting stations.
That most recently occurred in 2011 when a trace of snow was reported May 1 at Forest City and May 3 at Lansing.Widespread and measurable snowfall events are more unusual in May. The last measurable May snow reported in Iowa fell on May 1-2, 2005 with traces across about the northern third of the state, 0.1” at Stanley and 0.3” at Cresco. Similar events occurred on May 1, 1997 and on May 5-6, 1989.
Snowfall events producing multiple inches of accumulation are exceedingly rare in Iowa in May, having occurred in only ten years according to the research of the author, Jim Lee.  He says most of these events occurred in the late 1800s and the first half of the 20th century, in fact no station has reported an inch or more of snowfall in Iowa in May since 1967.
Here is a list of the five events producing the highest May snowfall accumulations on record in Iowa:
In 1882, snow fell on May 12 (across southeastern Iowa, with about an inch at Iowa City) and then again on May 23. On the latter date about the southeastern quarter of Iowa received snowfall, with around half an inch at Des Moines and up to 4-6” at Washington.
In 1907, spring was very cold and backward at least partially due to the large eruption of the volcano Ksudach in eastern Russia. Snow fell across all of Iowa (and the Midwest) on May 3, with amounts ranging up to 1.2” at Des Moines and 1.5” at Atlantic and Corning.
Another statewide snow fell on May 15 that was light in most areas but amounted to 5” at Rock Rapids.
In 1945, snow fell across about the northwestern half of Iowa on May 9-10 with most of the area reporting measurable snowfall. Amounts ranged up to an amazing 8” at Denison.
In 1947, one of the most remarkable weather events in Iowa history occurred when snow fell across most of the state on May 28, with measurable snow across the north and west ranging up to an incredible 10” at Le Mars. This is the latest spring snowfall on record in Iowa and also the highest amount ever recorded in the month of May.
In 1967, snow fell across about the southern half of Iowa on May 3, with amounts ranging up to an amazing 8” at Glenwood.

One-inch diameter hail reported in Adams & Adair Counties Tuesday evening

News, Weather

April 30th, 2013 by Ric Hanson

The National Weather Service in Des Moines says one-inch diameter hail was reported to have occurred six-miles north of Prescott Tuesday evening, in Adams County. The report was filed at 6:55-p.m.  Adams County Emergency Management reported a few minutes later, that there was a swath of one-inch hail that fell from Lake Icaria northeastward, to the Adams/Adair County line. The hail fell from about 6:35-p.m. until 7:05-p.m, and was also observed in the Adams County town of Carl.  At 7:15-p.m., one-inch diameter hail was also reported to have fallen seven-miles south of Greenfield, in Adair County. There were no immediate reports of damage.

Severe Thunderstorm Warning Cass, Adams & Adair Counties

Weather

April 30th, 2013 by Ric Hanson

627 PM CDT TUE APR 30 2013

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…

WESTERN ADAIR COUNTY IN SOUTHWEST IOWA…

NORTHWESTERN ADAMS COUNTY IN SOUTHWEST IOWA…

EASTERN CASS COUNTY IN SOUTHWEST IOWA…

* UNTIL 730 PM CDT

* AT 622 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED 7 MILES WEST OF CORNING…AND MOVING NORTHEAST AT 30 MPH.

HAZARD…QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

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

* LOCATIONS IMPACTED INCLUDE…CORNING…CARBON…CUMBERLAND…MASSENA…BRIDGEWATER…FONTANELLE

AND ANITA. THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 72 AND 85. PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

Hazardous Weather Outlook: Tues. evening, April 30th 2013

News, Weather

April 30th, 2013 by Ric Hanson

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

330 PM CDT TUE APR 30 2013

THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A COLD FRONT LATE THIS AFTERNOON AND INTO THE EVENING. A FEW SEVERE STORMS ARE POSSIBLE WITH HALF DOLLAR SIZED HAIL AND 60 MPH WINDS POSSIBLE. IN ADDITION…CONDITIONS ARE FAVORABLE FOR TRAINING STORMS WHICH MAY LEAD TO A NARROW BAND OF HEAVY RAINFALL.

WEDNESDAY THROUGH MONDAY: RAIN WILL REMAIN IN THE FORECAST WEDNESDAY FRIDAY NIGHT. RAINFALL AMOUNTS OF 1 TO 3 INCHES MAY CAUSE SIGNIFICANT WITHIN BANK RISES ALONG MANY RIVERS WITH MINOR FLOODING OCCURRING IN SOME LOCATIONS.

.SPOTTER INFORMATION STATEMENT…

SPOTTER ACTIVATION MAY BE NEED BETWEEN 5 PM AND 10 PM.

Big weather changes coming Wednesday…

Weather

April 30th, 2013 by Ric Hanson

A cold front will move into the state from the northwest this afternoon and evening. Very warm air will push temperatures into the 80s over the southeast half of the state, with 70s over much of the rest of the state. The far northwest will only reach the 60s. Thunderstorms are expected to develop along the cold front late this afternoon and tonight. The front will stall across southeast Iowa on Wednesday with rain continuing through the next few days. Cold air spilling into the central U.S. will change the rain to snow over much of northwest and central Iowa Thursday and Thursday night. (NWS/Des Moines)

(Podcast) Skyscan Forecast: April 30th 2013

Podcasts, Weather

April 30th, 2013 by Ric Hanson

The (Podcast) weather forecast for Atlantic & the KJAN listening area from Freese-Notis, and weather data for Atlantic…

The latest NWS forecast for Atlantic & the KJAN listening area: 4/30/13

Weather

April 30th, 2013 by Ric Hanson

347 AM CDT TUE APR 30 2013

EARLY THIS MORNING…PARTLY CLOUDY. BREEZY. SOUTH WIND 15 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.

TODAY…PARTLY SUNNY. A SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE AFTERNOON. THUNDERSTORMS LIKELY LATE IN THE AFTERNOON. BREEZY. HIGH IN THE UPPER 70S. SOUTHWEST WIND 15 TO 20 MPH BECOMING WEST 5 TO 10 MPH IN THE AFTERNOON. CHANCE OF THUNDERSTORMS 70 PERCENT.

TONIGHT…THUNDERSTORMS…BREEZY…COOLER. LOW AROUND 50. NORTHEAST WIND 5 TO 20 MPH. GUSTS UP TO 30 MPH AFTER MIDNIGHT. CHANCE OF THUNDERSTORMS 80 PERCENT.

WEDNESDAY...RAIN…BREEZY. MUCH COOLER. HIGH IN THE LOWER 50S. NORTH WIND 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH. CHANCE OF RAIN NEAR 100 PERCENT.

WEDNESDAY NIGHT…RAIN THROUGH MIDNIGHT…THEN RAIN POSSIBLY MIXED WITH SNOW AND SLEET AFTER MIDNIGHT. BREEZY…COLDER. SNOW AND SLEET ACCUMULATION UP TO 1 INCH. LOW IN THE MID 30S. NORTH WIND 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH. CHANCE OF PRECIPITATION NEAR 100 PERCENT.

THURSDAY…MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN AND SNOW. BREEZY. HIGH IN THE MID 40S. NORTH WIND 15 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.

THURSDAY NIGHT…MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN AND SNOW. LOW IN THE LOWER 30S.

FRIDAY…MOSTLY CLOUDY. RAIN POSSIBLY MIXED WITH SNOW AND SLEET IN THE MORNING…THEN LIGHT RAIN LIKELY IN THE AFTERNOON. HIGH IN THE MID 40S. CHANCE OF PRECIPITATION 60 PERCENT.

FRIDAY NIGHT THROUGH SATURDAY NIGHT…MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF LIGHT RAIN. LOW IN THE UPPER 30S. HIGH IN THE UPPER 40S.

Severe Thunderstorm Watch Cancelled

Weather

April 30th, 2013 by Ric Hanson

The Severe Thunderstorm Watch issued late Monday night for a portion of the KJAN listening area thru 5-a.m. today, has been cancelled.

Severe Thunderstorm Watch until 5-a.m. Tuesday, April 30th 2013

Weather

April 29th, 2013 by Ric Hanson

The National Weather Service Storm Prediction Center in Norman, OK, has issued SEVERE THUNDERSTORM WATCH #145, which is in effect until 5-a.m. CDT April 30th , 2013. Area Counties included in the Watch are: ADAIR ,ADAMS, AUDUBON,CARROLL, CASS,CRAWFORD, DALLAS, GUTHRIE,MADISON, RINGGOLD, TAYLOR, & UNION.

Hazardous Weather Statement: Cass & area Counties…

News, Weather

April 29th, 2013 by Ric Hanson

SAC-CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION–TAYLOR-RINGGOLD…

347 PM CDT MON APR 29 2013

THIS AFTERNOON AND TONIGHT: THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND TONIGHT…MAINLY SOUTH OF A LINE FROM ATLANTIC TO WATERLOO. SOME OF THESE STORMS COULD BE STRONG TO SEVERE…WITH LARGE HAIL AND STRONG WIND THE PRIMARY THREATS. HEAVY RAIN IS POSSIBLE WITH ANY STORM.

TUESDAY THROUGH SUNDAY: THUNDERSTORM CHANCES WILL RETURN ON TUESDAY AFTERNOON AND EVENING…AND PERSIST INTO WEDNESDAY ACROSS SOUTHEASTERN IOWA. ON TUESDAY AFTERNOON AND EVENING SOME OF THE STORMS COULD BE STRONG TO SEVERE…WITH LARGE HAIL AND STRONG WIND THE PRIMARY THREATS. HEAVY RAIN WILL BE POSSIBLE WITH ANY STORM.

SPOTTER ACTIVATION IS NOT ANTICIPATED.