AREA COUNTIES: SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-HARRISON-SHELBY-MONONA.

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND CHILL ADVISORY…WHICH IS IN EFFECT FROM 4 AM TO 10 AM CST THURSDAY.

* WINDS…NORTH WINDS AT 10 TO 15 MPH.

* TEMPERATURES/WIND CHILL VALUES…TEMPERATURES WILL FALL TO BETWEEN ZERO AND 5 BELOW BY DAYBREAK. WIND CHILLS WILL DROP TO 20 TO 27 BELOW LATE TONIGHT INTO MID MORNING THURSDAY.

* IMPACTS…FROST BITE CAN DEVELOP WITHIN 30 MINUTES IF SKIN IS EXPOSED AND HYPOTHERMIA MAY OCCUR IF PRECAUTIONS ARE NOT TAKEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS…MAKE SURE YOU WEAR A HAT AND GLOVES.

323 PM CST WED FEB 25 2015 …

THE NATIONAL WEATHER SERVICE IN OMAHA/VALLEY HAS ISSUED A WIND CHILL ADVISORY FOR HARRISON & SHELBY COUNTIES…WHICH IS IN EFFECT FROM 4 AM TO 10 AM CST THURSDAY. THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED.

* WIND CHILL VALUES…DROPPING TO AROUND 20 BELOW LATE TONIGHT THROUGH THURSDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS… A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS…MAKE SURE YOU WEAR A HAT AND GLOVES.

CARROLL-GREENE-BOONE-GUTHRIE-DALLAS-COUNTIES
1019 AM CST WED FEB 25

WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM.

* SHORT TERM TRENDS…MODERATE TO HEAVY SNOW WILL PERSIST OVER
NORTHERN IOWA AND SPREAD SOUTH INTO CENTRAL IOWA LATER IN THE MORNING. THE SNOW WILL LAST THROUGH THE AFTERNOON INTO THE EARLY EVENING HOURS.

* STORM TOTAL SNOW…4 TO 8 INCHES.

* WINDS/VISIBILITY…WINDS WILL INITIALLY BE EAST AT AROUND 10 MPH THIS MORNING BUT INCREASE TO 15 TO 25 MPH BY AFTERNOON AS THEY BECOME MORE NORTHERLY. VISIBILITIES WILL OFTEN BE A MILE OR LESS DURING PERIODS OF HEAVY SNOW.

* IMPACTS…SNOWFALL RATES MAY REACH AN INCH OR MORE PER HOUR AT TIMES LEADING TO SNOW COVERED ROADS AND HAZARDOUS DRIVING CONDITIONS. BLOWING AND DRIFTING SNOW MAY ALSO LEAD TO DIFFICULT DRIVING CONDITIONS THIS EVENING EVEN AFTER THE HEAVIEST SNOW HAS ENDED.

CRAWFORD-AUDUBON-CASS-ADAIR-ADAMS-UNION-TAYLOR-RINGGOLD

WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM UNTIL 9 PM

* STORM TOTAL SNOW…2 TO 4 INCHES.

* WINDS/VISIBILITY…WINDS WILL INITIALLY BE EAST AT AROUND 10 MPH THIS MORNING BUT INCREASE TO 15 TO 25 MPH BY AFTERNOON AS THEY BECOME MORE NORTHERLY. VISIBILITIES WILL DROP TO A MILE OR SO DURING PERIODS OF HEAVIER SNOW.

* IMPACTS…MODERATE SNOWFALL IS EXPECTED TO PRODUCE SNOW COVERED ROADS AND HAZARDOUS DRIVING CONDITIONS. BLOWING AND DRIFTING SNOW MAY ALSO LEAD TO DIFFICULT DRIVING CONDITIONS THIS EVENING EVEN AFTER THE HEAVIEST SNOW HAS ENDED.

POTTAWATTAMIE –

WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM UNTIL 8 PM…

HARRISON-SHELBY–

WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM.

* TIMING…A MIX OF RAIN…SNOW AND FREEZING RAIN WILL DEVELOP BY MID MORNING CHANGING TO ALL SNOW BY MID AFTERNOON ENDING BY THIS EVENING.

* IMPACT…1 TO 2 INCHES OF SNOW IS POSSIBLE IN FAR NORTHEAST HARRISON AND SHELBY COUNTIES…OTHERWISE AMOUNTS WILL BE AN INCH OR LESS.

* TIMING…NORTH OF I-80 SNOW WILL MOVE IN DURING THE AFTERNOON HOURS BEFORE DIMINISHING IN THE EARLY EVENING HOURS. SOME LOCATIONS SOUTH OF INTERSTATE 80 WILL SEE A WINTERY MIX OF RAIN…SLEET AND SNOW INITIALLY BEFORE CHANGING OVER TO ALL SNOW LATE IN THE AFTERNOON.

A major winter weather storm is rolling through Iowa as snow started flying this morning in the northwest and is moving southeast through the state. Jim Lee is a meteorologist with the National Weather Service.  “The accumulations will vary widely across the state. The southwest corner will see very, very little (snow). Whereas, in a band from about the northern to southeastern part of the state we’re looking at six plus inches,” Lee said.

Parts of Iowa may receive eight or more inches of snow. Some cities in the area projected to get the most snow include Webster City, Marshalltown, Newton, and Oskaloosa. Winter Storm Warnings and Winter Weather Advisories cover nearly the entire state. The heaviest snowfall may occur over sections of central during the afternoon commute.  “We’re looking for snowfall rates probably close to an inch an hour at times within that heaviest band,” Lee said.

As the snow is moving out of the state later tonight, winds are expected to increase and usher in some very cold conditions. High temperatures on Thursday and Friday will be in the single digits to teens across the state. Another smaller snow event is possible for parts of Iowa Saturday night into Sunday.

(Radio Iowa)

Snow will spread from northwest to southeast across Iowa today, then gradually clear out tonight leaving behind a swath of moderate to heavy accumulation.

Snowfall prediction map (NWS) 2/25/15

The National Weather Service says bitterly cold weather will then settle over region once again from late tonight into Saturday morning with near record cold possible at times. Snow chances will then return from the weekend into early next week

**Winter Weather Advisory 6am-8pm for Harrison & Shelby Co.; Winter Weather Advisory from 3-pm until 9-pm for Cass-Adair-Adams-Audubon-Crawford-Ringgold-Taylor & Union Counties; Winter Storm Warning in effect until 9pm for Guthrie-Dallas-Carroll and Sac Counties.**
Today: A 90% chance of snow (mainly after noon). Temperature rising to near 31 by noon, then falling to around 23 during the remainder of the day. E/SE @ 10-25.Wind chill values as low as 10. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight: Snow, mainly before midnight. Low around 0. N @ 15-30. Wind chill values as low as -15. New snow accumulation of less than a half inch possible.
Thursday: Becoming P/Cldy. High near 6. N @ 10-25. Wind chill values as low as -15. Thu. Night: Mostly clear, with a low around -12. N/NW @ 5-10. Wind chill values as low as -20.
Friday: Sunny, with a high near 12. S/SE @ 5.
Friday Night: Partly cloudy, with a low around -2.
Saturday: Mo. Cldy w/a 30% chance of snow after noon. High near 25.

Tuesday’s High in Atlantic was 44. Our low for the 24-hour period ending at 7-a.m. today will go down as 16. At 5:50-a.m. in Atlantic, it was 26 degrees.

AREA COUNTIES: CRAWFORD-AUDUBON-CASS-ADAIR-ADAMS-UNION-TAYLOR-RINGGOLD
437 AM CST WED FEB 25 2015

WINTER WEATHER ADVISORY NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO 9 PM CST THIS EVENING.

* TIMING…SNOW WILL MOVE INTO THE AREA DURING THE AFTERNOON HOURS
BEFORE DIMINISHING DURING THE EARLY EVENING HOURS.

* STORM TOTAL SNOW…2 TO 4 INCHES…IN AREAS SOUTH/EAST OF CASS COUNTY, GENERALLY 2 TO 5 INCHES WITH LESS AMOUNTS FARTHER SOUTHWEST TOWARD BEDFORD.

* WINDS/VISIBILITY…WINDS WILL INITIALLY BE EAST AT AROUND 10 MPH THIS MORNING BUT INCREASE TO 15 TO 25 MPH BY AFTERNOON AS THEY BECOME MORE NORTHERLY. VISIBILITIES WILL DROP TO A MILE OR SO DURING PERIODS OF HEAVIER SNOW.

* IMPACTS…MODERATE SNOWFALL IS EXPECTED TO PRODUCE SNOW COVERED ROADS AND HAZARDOUS DRIVING CONDITIONS. BLOWING AND DRIFTING SNOW MAY ALSO LEAD TO DIFFICULT DRIVING CONDITIONS THIS EVENING EVEN AFTER THE HEAVIEST SNOW HAS ENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES…AND USE CAUTION WHILE DRIVING.

AREA COUNTIES: SAC-CARROLL-GUTHRIE-DALLAS; 437 AM CST WED FEB 25 2015

WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING.

* TIMING…SNOW WILL MOVE INTO THE AREA FROM NORTHWEST TO SOUTHEAST THROUGH THE MORNING HOURS AROUND DAYBREAK AND ENDING SIMILARLY FROM THE AFTERNOON INTO THE EARLY EVENING HOURS.

* STORM TOTAL SNOW…FIVE TO NINE INCHES.

* WINDS/VISIBILITY…WINDS WILL INITIALLY BE EAST AT AROUND 10 MPH THIS MORNING BUT INCREASE TO 15 TO 25 MPH BY AFTERNOON AS THEY BECOME MORE NORTHERLY. VISIBILITIES WILL OFTEN BE A MILE OR LESS DURING PERIODS OF HEAVY SNOW.

* IMPACTS…SNOWFALL RATES MAY REACH AN INCH OR MORE PER HOUR AT TIMES LEADING TO SNOW COVERED ROADS AND HAZARDOUS DRIVING CONDITIONS. BLOWING AND DRIFTING SNOW MAY ALSO LEAD TO DIFFICULT DRIVING CONDITIONS THIS EVENING EVEN AFTER THE HEAVIEST SNOW HAS ENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL…KEEP AN EXTRA FLASHLIGHT…FOOD…AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

400 AM CST WED FEB 25 2015

WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 9 PM CST THIS EVENING.

EARLY THIS MORNING…CLOUDY. NOT AS COLD. EAST WIND 5 TO 10 MPH.

TODAY…CLOUDY…BREEZY…COLDER. A SLIGHT CHANCE OF SNOW THROUGH MID MORNING…THEN A CHANCE OF SNOW BEFORE NOON. SNOW IN THE AFTERNOON. SNOW ACCUMULATION OF 1 TO 3 INCHES. HIGH IN THE MID 30S. SOUTHEAST WIND 10 TO 15 MPH SHIFTING TO THE NORTHEAST 15 TO 20 MPH IN THE AFTERNOON. GUSTS UP TO 30 MPH. CHANCE OF SNOW 90 PERCENT.

TONIGHT…CLOUDY. VERY COLD. BREEZY. SNOW IN THE EVENING…THEN A CHANCE OF LIGHT SNOW BEFORE MIDNIGHT. A SLIGHT CHANCE OF LIGHT SNOW AFTER MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION 1 TO 4 INCHES. LOW ZERO TO 5 ABOVE. NORTH WIND 15 TO 20 MPH WITH GUSTS TO AROUND 30 MPH. CHANCE OF SNOW 90 PERCENT.

THURSDAY…MOSTLY CLOUDY THROUGH MID MORNING THEN BECOMING MOSTLY SUNNY. VERY COLD. HIGH 5 TO 10 ABOVE. NORTH WIND 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.

FRIDAY…SUNNY. HIGH 10 TO 15. NORTHWEST WIND AROUND 5 MPH SHIFTING TO THE SOUTHWEST UP TO 5 MPH IN THE AFTERNOON. LOWEST WIND CHILL READINGS 15 TO 20 BELOW IN THE MORNING.

SATURDAY…CLOUDY. A 40 PERCENT CHANCE OF SNOW IN THE AFTERNOON. WARMER. HIGH IN THE MID 20S.

325 AM CST WED FEB 25 2015

WINTER WEATHER ADVISORY NOW IN EFFECT FROM 6 AM until 8 PM TODAY. A.QUICK MOVING CLIPPER SYSTEM WILL BRING A MIXTURE OF PRECIPITATION TO THE REGION. A FAST MOVING LOW PRESSURE SYSTEM WILL BRING A MIXTURE OF RAIN…SNOW AND POSSIBLY SOME FREEZING RAIN TO THE AREA. PRECIPITATION IS EXPECTED TO MOVE INTO THE AREA AFTER 6AM THEN SPREAD SLOWLY SOUTH DURING THE MORNING.  PRECIPITATION WILL CHANGE TO ALL SNOW

* TIMING…A MIX OF RAIN…SNOW AND FREEZING RAIN WILL DEVELOP BY MID MORNING CHANGING TO ALL SNOW BY MID AFTERNOON INTO EARLY THIS EVENING.

* MAIN IMPACT…1 TO 3 INCHES OF SNOW COULD ACCUMULATE IN MOST OF THE ADVISORY AREA.

* OTHER IMPACTS…NORTH WINDS WILL INCREASE TO 15 TO 30 MPH WHICH COULD PRODUCE AREAS OF BLOWING AND DRIFTING SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES…AND USE CAUTION WHILE DRIVING.