Breezy First Day of Spring

Welcome to spring, the new season begins with above normal temperatures and breezy winds. We warm into the 50s and 60s today. Clouds begin to track back in late tonight and increase into Tuesday morning. A cold front from the north brings a slight chance of showers Tuesday, but many will stay dry for the first full day of spring tomorrow. It’ll be cooler tomorrow, with highs only in the 40s and 50s (which is normal for this time of year).

A pair of cooler days comes Wednesday and Thursday. Another system, which will track to our south, brings another chance of rain Thursday and storms on Friday. We’ll warm to near 60° late week for a brief warm up before some cooler – yet near normal – temperatures settle in for the weekend.

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Posted under Forecast Discussion, Windy

This post was written by Rachael Peart on March 20, 2017

Another Breezy Day with a Chance of Storms Late

Breezy winds continue today. Expect milder conditions across eastern Iowa to close the weekend. Highs today warm into the 50s with some 60s possible, as well. Clouds increase (mainly along and south of highway 20) this evening. A few showers and isolated storms quickly track through tonight. The risk of severe weather is low, but any storms have the potential for hail and lightning.

Monday stays dry with mostly cloudy skies. The first day of spring tomorrow will feel more like early April with many more 60+° high temperatures. A few showers move through Tuesday along with cooler air. Warm air returns Friday, but not before another chance of rain Thursday and a chance of storms Friday.

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Posted under Forecast Discussion

This post was written by Rachael Peart on March 19, 2017

Breezy Saturday, Milder Sunday

Overall, the weekend will be mild, if you don’t mind breezy winds. After a windy night, expect winds Saturday to come from the northwest, bringing in cooler air. Highs today reach the 40s. Winds calm briefly but also shift overnight…and the wind shift will be vital to how tomorrow will feel in eastern Iowa. Southeasterly winds Sunday bring in much warmer air. Expect a 10° difference between highs Saturday and highs Sunday for many towns.

However, a chance of rain with isolated storms tracks in late Sunday night/early Monday morning. An isolated thunderstorm is possible. At this point, the risk for severe weather is low with any storms Sunday into Monday.

Showers look like they end by midday Monday (the first official day of Spring), leaving a mild day with highs in the mid-50s. Tuesday and Wednesday will be slightly cooler. Another storm system tracks in late week, bringing rain Thursday and a better chance for more widespread storms Friday.

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Posted under Forecast Discussion, Windy

This post was written by Rachael Peart on March 18, 2017

Snowfall Totals and Forecast Verification

The latest winter storm brought a wide range of snowfall totals across eastern Iowa.  Generally there was a 2 to 10 inch swath across the KWWL viewing area.  The map on the left was the snowfall forecast Sunday evening, compared to actual snow totals on the right. (Click the image to make it bigger)

Here are the snow totals reported to the National Weather Service:

Town Amount
Waterloo 10.6
Dubuque 4.5
Cedar Rapids 5.3
Iowa City 4.2
_________  __
3 NNE Kesley, IA 6.0
Ainsworth 7.4 N 2.5
Amana 4.7 W 3.2
Anamosa 3SSW, IA 5.2
BELLE PLAINE, IA 5.0
CALMAR, IA 3.8
CASCADE, IA 4.7
Cedar Falls 0.4 WNW 6.1
Cedar Falls 1.4 SSE 9.0
Cedar Rapids 2.2 WSW 4.2
Cedar Rapids 2.7 NE 5.5
Center Junction 2.6 W 5.0
Central City 6.7 W 7.5
CHARLES CITY, IA 7.8
COGGON, IA 9.5
CONRAD, IA 4.5
CRESCO 1NE, IA 5.5
DECORAH 5.0
Decorah 4.9SE 5.3
Decorah 7.9 ENE 5.4
Dubuque #3, IA 4.3
Dubuque L&D 11, IA 3.0
ELKADER 6SSW, IA 4.4
ELMA, IA 5.6
Fairfax 0.0 NW 5.0
FAYETTE, IA 6.3
FULTON, IA 3.0
HAMPTON, IA 8.0
IONIA 2W, IA 8.0
IOWA CITY, IA 3.0
IOWA FALLS, IA 6.0
Kalona 7.3 NNW 4.5
LOWDEN, IA 7.0
MANCHESTER NO. 2, IA 6.7
MAQUOKETA 4 W, IA 5.5
Marion 1.2 NE 5.2
Marquette 0.2 NNE 4.0
Monona WWTP, IA 3.8
Monticello, IA 7.0
New Hampton 0.3 NNW 6.0
NEW HAMPTON, IA 10.0
Nora Springs 2.4 SSE 8.0
NORTH ENGLISH, IA 1.0
Oelwein 0.8 WNW 7.1
OSAGE , IA 7.4
Quasqueton 1.8 S 7.7
Robins 0.4 SSE 6.0
Sigourney, IA 2.0
Solon 0.3 ESE 4.1
ST ANSGAR, IA 8.2
STANLEY 4 W, IA 9.5
STRAWBERRY POINT, IA 4.4
SWISHER, IA 4.4
TOLEDO 3 N, IA 4.0
TRAER, IA 6.0
TRIPOLI, IA 7.6
VINTON, IA 5.5
VOLGA 1NE, IA 4.5
WASHINGTON, IA 1.8
Waterloo 1.4 ESE 8.3
WAUCOMA , IA 6.0
WILLIAMSBURG 3 SE, IA 3.0
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Posted under Forecast Discussion, Precipitation Totals, Winter Weather

This post was written by Kyle Kiel on March 13, 2017

Winter Storm Warning and Winter Weather Advisory Sunday

All of eastern Iowa is now under either a Winter Weather Advisory or Winter Storm Warning – including Keokuk and Washington counties, which were not previously included in the Winter Storm Watch. These were issued for accumulating snow and blowing snow concerns Sunday afternoon through Monday.

Snow begins in our far northwestern counties on Sunday afternoon and the snow onset line tracks east into the evening. Breezy winds develop this afternoon then become even stronger overnight as our weather maker tracks through parts of Iowa.

The heaviest of the snow is expected late Sunday into very early Monday morning. That means that Monday morning commuters (including school buses that aren’t on Spring Break) may have travel concerns tomorrow.

By late Monday morning, snow continues but the heaviest of it should be mainly out of our area. Strong winds come from the north tomorrow morning. Snowfall rates decrease into the afternoon. Winds calm later in the day. Highs tomorrow (and today) reach the low to mid 30s across most of eastern Iowa.

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Posted under Forecast Discussion, Precipitation Totals, Winter Weather

This post was written by Rachael Peart on March 12, 2017

Latest on Winter Storm

Here’s the latest thinking as of Saturday night on the winter storm heading to eastern Iowa for later Sunday afternoon and Monday.  There’s still a little bit of uncertainty on the track of the storm, as well as the amounts, but we are getting a better idea as the storm is now moving over land.  Winter Storm Watches have been expanded to include much of the KWWL viewing area.

Sunday will start out partly sunny, with a SE wind 10-15 mph and high temperatures in the lower and middle 30s.  After 5 PM is when we have the potential for snow to develop across our northwestern counties. The snow will overspread the area Sunday night, and could be heavy at times.  Lows tomorrow night will be in the 20s.  The Monday morning commute will likely be tricky, so plan for some extra time for your commute.

The snow will continue through the morning hours on Monday, before winding up by late morning or early afternoon.  When all is said and done, snow totals could range from 2-4″ in our far southern hometowns, to as much as 8 inches in our northern hometowns.  The storm is still developing to our west and could shift a little over the next 24 hours, so stay tuned for updates.

This snowfall will won’t be too much of a “wet” or “dry” snow, it will end up somewhere in between.  Keep that in mind when shoveling or plowing.

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Posted under Forecast Discussion, Winter Weather

This post was written by Kyle Kiel on March 11, 2017

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Winter Weather Alerts Extended for Sunday

The winter storm watch was extended early Saturday to include Grundy County and parts of southwestern Wisconsin.

Snow moves in during the afternoon from west to east, with northern counties seeing the snow first. By dinner time Sunday, snow extends as far south as highway 20. The entire eastern half of the state will have snow shortly after midnight Monday. Snow continues through the morning Monday before tapering off that afternoon.

Snow will accumulate across eastern Iowa. The heaviest snow amounts are expected north of and along highway 20. Those areas can expect an isolated area of more than six inches (6”), however, 4-6” is possible for most north of highway 20. South of highway 20, those are areas where 2-4” is possible. These values will likely change as the storm tracks closer. Stay tuned.

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Posted under Forecast Discussion, Winter Weather

This post was written by Rachael Peart on March 11, 2017

TRACKING: Winter Storm Watch Sunday PM & Monday

 

A Winter Storm Watch is in effect for the counties shaded in blue late Sunday through Monday.  More winter weather alerts are likely throughout the weekend.

A winter storm tracks into the region late Sunday into Monday.  This has the potential to bring 2-6 inches of snow across eastern Iowa, with the most across our northern area.  This will likely have major impacts on the Monday morning commute.  Stay with KWWL for updated forecasts, as the amounts may shift or change a bit as new information rolls in as the storm gets closer.  As of Friday night the storm is off the west coast of the United States.

Here are the probabilities for 1″, 2″, and 4″ or more of snow from the Weather Prediction Center (Friday evening):

 

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Posted under Forecast Discussion, Winter Weather

This post was written by Kyle Kiel on March 10, 2017

Weekend Snow Possible

We are not officially out of winter yet, and the extended forecast brings a few “blasts” of winter weather to eastern Iowa. A few flurries are possible tonight into Saturday morning. That won’t leave much behind as far as accumulations…maybe a trace in our far southwestern areas. We dry out and could see a little sunshine Saturday afternoon. By Sunday afternoon, more snow tracks in. That is the system we’re watching for accumulating snow. Snow continues overnight Sunday and through the day Monday.

As far as totals…things are not coming together as much as we would like. It does look like by Tuesday morning, most of the state will have some snow on the ground. The majority of snow looks like it will fall along and north of highway 20. With temperatures on Sunday and Monday warming to near freezing, some of the snow will be on the heavier side. Those who see the heaviest snow may get upwards of six inches (6”).

We stay below normal through late next week. Another chance for snow tracks in Wednesday.

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Posted under Forecast Discussion, Temperatures, Winter Weather

This post was written by Rachael Peart on March 10, 2017

Burning Discouraged Tuesday

A WIND ADVISORY is in effect until 6pm this evening for Winneshiek, Allamakee, Chickasaw, Fayette, and Clayton counties. Winds could gust up to 50 mph today, which could cause some minor damages.

A RED FLAG WARNING is in effect until 6pm this evening for those counties along and south of highway 20. Wind gusts up to 45 mph are possible and coupling strong winds with low moisture content in the air increases the risk for any fires to spread quickly. Avoid outdoor burning today.

For the most part, things stay quiet today. Strong west winds continue today and Wednesday, as well. Temperatures will be slightly cooler (but still above normal) in the low to mid 50s. Mostly sunny skies both today and tomorrow make for a pair of beautiful looking, but windy, days. Highs Wednesday will be even cooler than today – warming into the mid-40s to low 50s.

Winds calm but clouds increase by Thursday. We are tracking several chances for wintry weather this weekend.

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Posted under Fire, Forecast Discussion, Windy

This post was written by Rachael Peart on March 7, 2017