Today: Partly cloudy & windy. High 41. SW @ 10-20 mph.

Tonight: P/cldy to Cldy w/flurries late. Low 7. NW @ 20-40. **Wind Advisory in effect from 6-p.m. today thru 6-a.m. Wed.**

Tomorrow: P/Cldy. High 12. NW @ 20-40 diminishing late.

Thursday: P/Cldy w/flurries. High 10

Friday: Mo. cldy w/flurries. High 23.

Monday’s High in Atlantic was 35. Our Low was 7. Last year on this date the High in Atlantic was 40 and the Low was 9. The Record High on this date was 59 in 1939. The Record Low was -29 in 2010.

(Radio Iowa) – The outbreak of dozens of tornadoes in Iowa and across the region last month was very unusual and one weather expert says it may be a sign of what lies ahead. Doug Kluck, climate services director for the Central Region of the National Weather Service, says massive and rare derecho storms like the one on December 15th may be connected to a changing climate. “The likelihood of tornadoes in December and January and other, if you will, off-season severe weather is and will be enhanced in the future,” Kluck says.

The regional National Weather Service office in Kansas City is seeing other changes to the traditional storm track. Kluck says, “The center of tornado alley moving further east, out of the Great Plains and such and then, of course, simply the observation of severe weather in other parts of the year can lead one to that conclusion, to some degree.”

Parts of Iowa saw record high temperatures in the 70s prior to the storm’s arrival on December 15th and the warm air collided with a cold front, bringing exceptionally strong straight line winds and multiple damaging tornadoes. Minnesota recorded its first-ever December tornadoes that same day.

“Those conditions are very hard to put together in December and January, certainly in Minnesota but even in Iowa and Nebraska,” Kluck says. “The further south you go, the easier it is to put the combination of those variables together to create severe weather, but certainly not this far north.”

The derecho was Iowa’s second in two years and it spun off 43 tornadoes in the state, a single-day record, along with 18 twisters in Nebraska and six in Minnesota.

Today: Mostly sunny. High 36. SW @ 10-20 mph.

Tonight: Fair to partly cloudy. Low 25. S @ 10.

Tomorrow: P/Cldy. High 42. SW @ 10-20.

Wednesday: P/Cldy, windy & colder. High 14.

Thursday: P/Cldy. High 12.

Sunday’s High in Atlantic was 9. Our Low was -11. Last year on this date the High in Atlantic was 35 and the Low was 10. The Record High on this date was 52 in 1933. The Record Low was -30 in 2010.

(Atlantic, Iowa) – The last month of 2021 in Atlantic 12 degrees warmer and slightly less than one-inch drier than normal. The Average High for December was 45. The Average Low was 20. We received just .16″ of precipitation during the entire month, including .2″ melted snow on the 10th. December 15th was the warmest day, with a record-breaking 72 degrees, followed by December 2nd, when we set a record High of 65.

There were no record Low temps set for the month. The coldest morning was on Dec. 31, when we bottomed-out the mercury at 4 degrees. During the month of January in Atlantic, we typically see a little over eight-tenths of an inch of precipitation (Including melted snowfall). The Average High is 29, and the average Low is 9 Degrees.

We’ll let you know how the data compared to those stats, when we compile the data next month.

Today: Sunny, with a high near 16. Wind chill values as low as -25. North northwest wind 5 to 8 mph becoming southwest in the afternoon. **WIND CHILL ADVISORY until Noon for wind chill factors as low as -25.**
Tonight: Clear, with a low around -1. Wind chill values as low as -10. South southwest wind 5 to 8 mph.
Monday: Sunny, with a high near 36. Wind chill values as low as -10. South wind 7 to 15 mph, with gusts as high as 23 mph.
Tuesday: Partly sunny, with a high near 36. Breezy.
Wednesday: Mostly sunny, with a high near 15. Windy.

Saturday’s High in Atlantic was 4. Our this morning, -10. We received 1.6-inches of snow in Atlantic, Saturday at the KJAN studios. Liquid precip. value = .05″.  Last year on this date the High in Atlantic was 23 and the Low was 7. The Record High on this date was 64 in 2002. The Record Low was -19 in 1901.

SKYSCAN FORECAST FOR SATURDAY, JANUARY 1, 2022

NEW YEAR’S DAY

TODAY: Cloudy with snow developing. Blowing snow with accumulations of 2-5 inches in the KJAN listening area. N 10-30 High 8

TONIGHT: Snow ending early becoming partly cloudy. N 15-25 Low -13

SUNDAY: Partly cloudy SW 5-10 High 18

MONDAY: Partly cloudy High 32

TUESDAY: Partly cloudy High 38

This Afternoon: Mostly cloudy, with a high near 31. Blustery, with a north wind 11 to 18 mph, with gusts as high as 25 mph. **WINTER WEATHER ADVISORY for freezing drizzle until 6-p.m.**

Tonight: A 50 percent chance of snow, mainly after 3am. Cloudy, with a low around 2. Wind chill values as low as -15. Windy, with a north wind 20 to 23 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.

New Year’s Day: Snow. The snow could be heavy at times. Widespread blowing snow, mainly between 7am and 11am. High near 7. Wind chill values as low as -20. Windy, with a north wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible. **WINTER STORM WARNING from 6-a.m. to midnight**

Saturday Night: A 20 percent chance of snow before 8pm. Cloudy during the early evening, then gradual clearing, with a low around -11. Wind chill values as low as -20. North northwest wind 5 to 14 mph, with gusts as high as 20 mph.

Sunday: Sunny, with a high near 14. Northwest wind 5 to 10 mph becoming south southwest in the afternoon.

SKYSCAN FORECAST FOR FRIDAY DECEMBER 31, 2021

TODAY: Some fog early on, then increasing cloudiness. SE winds shifting N 10-20 High 34

TONIGHT: Mostly cloudy with light snow. N 10-20 Low 5

SATURDAY: Cloudy with SNOW…possibly 2-6” in the KJAN listening area N 15-25 High 10

SATURDAY NIGHT: Snow ending. Mostly clear skies Low -2

SUNDAY: Partly cloudy skies High 18

MONDAY: Partly cloudy skies High 32

(Radio Iowa) – Weather observers are still trying to get a perspective on the intense storm system that blasted across Iowa earlier this month, the second derecho to hit us in as many years — which spun off a record number of tornadoes. State climatologist Justin Glisan says the storm was historic in many ways, like how the “moderate area risk” was issued for Iowa. “Moderate” may sound tame but that’s a Level Four warning out of five. “This was the first ‘moderate area’ put out by the Storm Prediction Center in Iowa, Minnesota and Wisconsin during the month of December in history,” Glisan says. “This tells you how unstable the environment was. We had wind shear available, we had instability available, we had ample low level moisture, and all of the ingredients came together for a large-scale straight line wind and tornadic event.”

About half of the state was declared a disaster by the governor, and Glisan says damage was widespread from the multitude of tornadoes, the severe thunderstorms and the straight line winds, some of which had gusts that reached 80 to 90 miles an hour.  “We’d also had multiple reports of 70 mile-per-hour winds based on non-thunderstorm winds,” he says. “These are winds that are produced by the tight pressure gradient that the low pressure system was able to produce, given its proximity to a blocking high pressure system that was able to amp up our temperatures during the day, overnight on the 14th and into the 15th.”

Iowa cities from Sioux City all the way to Burlington reported record high temperatures during the day, most of them springlike upper 60s and lower 70s — unheard of for mid-December. Those temps quickly fell when the storm hit, dropping 30 to 40 degrees, helping to fuel the violent weather. A total of 43 tornadoes were reported in Iowa during this storm, and one death was attributed to the winds — a truck driver whose big rig was flipped into a Benton County ditch. Those 43 twisters set a single-day record for Iowa. At least seven tornadoes were also reported in Nebraska during the storm, and there was an exceptionally rare twister to our north. “We had the first tornado in Minnesota history in December,” Glisan says. “Given the large-scale nature of this outbreak, while one fatality is too much, it is good news that we were able to get the proper warnings up.”

More than 150-thousand Iowa homes lost power during the storm and it took several days to get them all back online. Like the first derecho that hit Iowa back on August 10th of 2020, Glisan says they’ll long be studying this second derecho from December 15th of 2021.

Today: Becoming partly cloudy. High near 35. S/SE @ 10 mph.
Tonight: P/Cldy. Low around 20. SE @ 5 mph.
Tomorrow: P/Cldy to Cldy. High 32. N @ 10-20.
Tom. Night: Cloudy & blustery w/a 30% chance of snow after midnight. Low around -1. N @ 15-25 mph. New snow accumulation of less than a half inch possible.
New Year’s Day: **WINTER STORM WATCH**Snow likely, mainly before noon. Patchy blowing snow. High near 13.
Saturday Night: A 20% chance of snow before midnight. Partly cloudy, with a low around -13.
Sunday: P/Cldy. High around 20.

Wednesday’s High in Atlantic was 21. Our Low was 12. Last year on this date the High in Atlantic was 25 and the Low was -4. The Record High on this date was 64 in 2004. The Record Low was -22 in 1917.