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

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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Slick Roads Tonight…Another Chance of Rain/Snow Wednesday

8:00 PM UPDATE: The wind advisory has been cancelled. 


6:00 PM UPDATE: The winter weather advisory has been cancelled. 


Tonight: The roads will be slick this evening and tonight. Use caution when traveling. Here is a link to check the latest road conditions. A WINTER WEATHER ADVISORY is in effect through the evening with gusty winds and icy roads. A WIND ADVISORY is in effect this evening for gusty winds. The wind diminishes after the sun sets. A 10-15 mph wind switches to the SW then to SE overnight. Temperatures continue to drop into the teens and 20s by morning. Anything wet will turn to ice. Use caution when traveling and walking. They sky will be clear to partly cloudy overnight.

 

Winter Weather AdvisWind Advisory

 

Wednesday: Clouds increase quickly in the morning with a chance of a light snow shower or rain shower. Temperatures warm into the 20s across northern Iowa with a light snow shower. A rain shower is possible in our southern counties with temperatures in the upper 30s and low 40s. Here is the forecast map for Wednesday afternoon.

 

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Wind Forecast

 

Wednesday Night: A lingering snow shower or flurry is possible otherwise it remains cloudy. It is colder with single digits north and teens south by Thursday morning.

Thursday/Friday: These will be the two coldest days of the next seven…with Friday the colder one of the two. Partly to mostly cloudy sky is expected both days.

Saturday: A 20% chance of light snow as temperatures warm into the 20s.

Sunday: Mostly cloudy and a little warmer as some locations reach the low 30s during the afternoon.

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Posted under Forecast Discussion, Windy, Winter Weather

This post was written by Schnack on January 10, 2017

ICYMI Nov 3 – Another Delay/ Widget/ Big Dipper/ Snow Cover

Last night during the 7th game of the World Series there was a short rain delay. There was a delay announced today from NASA when it comes to the new GOES-R Satellite scheduled to launch on Nov 16. The latest update from today says they are working on a problem and the launch has been delayed until further notice.
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Here is a cool widget to put on your web page or blog from NASA. Click here for information.


Look north to see the Big Dipper every evening in November.

7


Here is a look at the snow cover in North America…most of it is in Canada.

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Posted under Astronomy, NASA, Winter Weather

This post was written by Schnack on November 3, 2016

Big Iowa Snowstorm: April 29, 1956

It’s been rain and severe weather across the state of Iowa over the last week, but that wasn’t the case in 1956.  Parts of the state were dealing with a snowstorm that dumped heavy snow.  Here is the surface weather map from April 29, 1956.  You can see the low pressure in Missouri, with northwest Iowa being on that northwest side of the storm.
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This is the latest date more than 10″ of snow has fallen in the state of Iowa.

4291956

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Posted under Weather History, Winter Weather

This post was written by Kyle Kiel on April 29, 2016

Latest Rain & Snow Totals

snowfall reports

Town Rainfall Snowfall
Waterloo 0.91 0.4
Dubuque 0.72
Cedar Rapids 0.49
Iowa City 0.41
Clarksville 0.2 NW 0.98
Ainsworth 7.4 N 0.25
Amana 4.7 W 0.59
Anamosa 3SSW, IA 1.10 3.6
BELLE PLAINE, IA 0.39
Bellevue LD 12, IA 0.98 T
BRIGHTON, IA 0.77
CASCADE, IA 1.02
Cedar Falls 1.4 SSE 0.76
Cedar Rapids 3.4 NW 1.00
Center Point 0.6 NNW 0.58
CHARLES CITY, IA 0.61
COGGON, IA 0.56
Coralville 1.8 NW 0.84
CRESCO 1NE, IA 1.15 3.0
Decorah 7.9 ENE 0.40
DENISON, IA 0.45
Dubuque #3, IA 0.83
Dubuque L&D 11, IA 0.73
Eldora 1.2 ENE 0.36
ELKADER 6SSW, IA 0.61
Ely 0.5 SE 0.79 0.3
FAYETTE, IA 0.85
GRUNDY CENTER, IA 0.54
Hopkinton 5.4 WSW 0.56
IOWA CITY, IA 0.99
IOWA FALLS, IA 0.93
Kalona 7.3 NNW 0.82
KESLEY 3 NNE, IA 0.33
Latimer 1.9 NE 0.22
LOWDEN, IA 0.57
MANCHESTER NO. 2, IA 0.94
MAQUOKETA 4 W, IA 0.65 T
Marengo 2.6 SSW 0.98 1.3
MARENGO, IA 0.41
Marion 1.2 NE 0.8 0.3
Marion 1.7 NNW 0.6
Marquette 0.2 NNE 1.21 5.0
Monona WWTP, IA 1.03 1.0
Monticello, IA 0.56
NASHUA 2SW, IA 0.82 0.3
New Hampton 0.4 SW 1.47 1.0
NEW HAMPTON, IA 0.29
Nora Springs 2.4 SSE 1.25 0.2
NORTH ENGLISH, IA 0.85 0.3
Oelwein 0.8 WNW 1.48 5.1
OELWEIN 1E, IA 0.51
OSAGE , IA 0.91
Parnell 0.1 SSW 0.88 0.1
Quasqueton 1.8 S 0.85
Robins 0.4 SSE 0.76
ST ANSGAR, IA 0.88 T
STANLEY 4 W, IA 0.41
STRAWBERRY POINT, IA 0.79
Swisher 0.4 NNE 0.68 0.5
TOLEDO 3 N, IA 0.84 4.6
TRAER, IA 0.92 T
TRIPOLI, IA 1.04
VINTON, IA 0.61
VOLGA 1NE, IA 0.29
WASHINGTON, IA
Waterloo 1.0 SW 0.81
Waterloo 1.8 SSE 0.80
Waterloo NWS Snowfall, IA 0.98
WILLIAMSBURG 3 SE, IA 0.79

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Posted under Precipitation Totals

This post was written by Kyle Kiel on March 24, 2016

Possible Snow Tuesday

After a warm weekend there is potential for a storm to bring snow to Iowa. The model guidance has changed with every update from location of snow and amount of snow. At one point one model had 36” of snow for parts of eastern Iowa and the next update it was lowered to 7”. At the same time the other long range model had nothing when the first one mentioned had 36”. So as you can see the model guidance has not been very helpful.

As Meteorologists we like to see consistency in the long range models from update to update. That has not been the case in the last 6 days. As we get closer to next Tuesday the hope is for some similarity. At least by the weekend the short term models will add some insight as to what might happen on Tuesday.

With that said, here is the latest model guidance showing where the best chance of snow to fall. Notice the big difference on location of the snow. These maps are most likely going to change with each update. One of the model updates 4 times a day so expect a lot of changes until we get closer.

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The National Weather Service is also looking at the potential for snow and possibly heavy across Iowa Tuesday.

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We will continue track the developments through the warm weekend. The weekend weather throws a wrench in this storm as well. The ground is going to be very warm after three days with temperatures near or into the 50s. So for the snow to accumulate it would have to come down pretty fast. The storm also will start out as rain with temperatures near 40. There is a lot to iron out so the best advice is to check back for updates as there will be changes.

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Posted under Forecast Discussion

This post was written by Schnack on February 25, 2016

Latest Snow Totals

snowfall

Friday, November 20 through Saturday, November 21

Location County      Totals
Waterloo Black Hawk 12.7
Dubuque Dubuque 10.2
Cedar Rapids Linn 7.0
Iowa City Johnson 8.9
Amana 4.7 W Iowa 7.0
Anamosa 3SSW, IA Jones 7.5
ANAMOSA 4 ENE Jones 5.0
ATKINS Benton 8.5
BELLE PLAINE, IA Benton 4.0
Bellevue LD 12, IA Jackson 5.0
CALMAR 1NW Winneshiek 5.0
CALMAR, IA Winneshiek 5.0
Cedar Rapids 1 W Linn 6.0
Cedar Rapids 2 NNE Linn 7.0
Cedar Rapids 2 W Linn 6.5
Cedar Rapids 2 W Linn 6.0
Cedar Rapids 4 NNW Linn 7.0
CEDAR RAPIDS 5 NW Linn 7.1
CENTER JUNCTION 3 SSW Jones 6.0
Central City 6.7 W Linn 5.0
CHARLES CITY, IA Floyd 9.6
CLUTIER, IA Tama 8.0
COGGON, IA Linn 7.9
COLWELL, IA Floyd 5.5
Coralville 1.8 NW Johnson 6.3
DECORAH Winneshiek 8.5
DECORAH 6ESE Winneshiek 5.5
Decorah 7.9 ENE Winneshiek 5.2
Dubuque #3, IA Dubuque 10.2
Dubuque 1 NW Dubuque 12.0
Dubuque 4 WNW Dubuque 11.0
Dubuque L&D 11, IA Dubuque 9.5
DUMONT 5 SSE Butler 12.0
DURANT Cedar 5.5
EDGEWOOD Clayton 11.0
Edgewood 1 S Delaware 11.0
EDGEWOOD, IA Clayton 11.0
Eldora Hardin 9.0
ELKADER 6SSW Clayton 11.4
Elmira 1 W Johnson 7.0
FAYETTE Fayette 11.3
FAYETTE, IA Fayette 11.3
GARRISON 3 SE, IA Benton 4.5
GRUNDY CENTER 1 E, IA Grundy 7.0
GUTTENBERG 1 W Clayton 12.0
GUTTENBERG L & D 10, IA Clayton 9.0
HARPERS FERRY, IA Allamakee 5.5
Independence, IA Buchanan 9.0
IOWA CITY 2 SSE, IA Johnson 8.5
IOWA CITY 1 WSW, IA Johnson 5.4
Iowa City 2 SSW, IA Johnson 8.9
Iowa City, IA Johnson 9.5
IOWA FALLS 1 ESE, IA Hardin 7.0
IOWA FALLS, IA Hardin 7.0
Kalona 7.3 NNW, IA Johnson 9.0
LADORA 2 SSW, IA Iowa 6.0
LADORA 3 S, IA Iowa 5.0
LOWDEN, IA Cedar 8.5
MAQUOKETA 1 NNW, IA Jackson 6.0
MAQUOKETA 4 W, IA Jackson 5.3
Monona WWTP, IA Clayton 8.7
Monona WWTP, IA Jones 7.5
Mount Vernon, IA Linn 8.5
NASHUA 2SW, IA Floyd 8.5
Nora Springs 2.4 SSE Floyd 10.0
NORTH ENGLISH, IA Iowa 7.0
NORTH LIBERTY 1 SSW Johnson 8.0
NORTH LIBERTY 2 NNW, IA Johnson 6.0
OELWEIN 0.8 WNW Fayette 10.0
OELWEIN 1WNW Fayette 10.0
PARKERSBURG 1 WNW Butler 11.0
Quasqueton 1.8 S Buchanan 8.0
RIVERSIDE 3 SE Washington 8.0
Robins 0.4 SSE Linn 6.5
Solon Johnson 8.5
Solon 1 E Johnson 6.4
ST ANSGAR, IA Mitchell 4.2
STANLEY 4 W, IA Buchanan 9.0
STRAWBERRY POINT Clayton 10.0
TIFFIN 2 SW Johnson 4.0
TOLEDO 3 N, IA Tama 7.0
TRIPOLI, IA Bremer 6.5
Vinton Benton 7.0
VOLGA 1NE Clayton 11.4
VOLGA 1NE, IA Clayton 11.4
W SOLON 2 W Johnson 8.0
WADENA Fayette 10.5
WASHINGTON Washington 5.0
WASHINGTON, IA Washington 4.0
Waterloo 1.8 SSE Black Hawk 9.5
WATERLOO 2 SSE Black Hawk 9.5
Waterloo NWS Snowfall, IA Black Hawk 12.7
WATERVILLE 8S Allamakee 5.5
WELLSBURG 4 NNW Grundy 10.0
WEST UNION 2SSW Fayette 8.0

 

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Posted under Precipitation Totals, Winter Weather

This post was written by Denice Pelster on November 21, 2015

Tracking Strong Wind and Potential for Snow

It will be very windy tonight and Thursday across eastern Iowa.  A strong area of low pressure will continue tracking to the north, leaving behind gusty westerly winds.  Gusts tonight could be as high as 45 mph, with wind gusts as high as 50 mph at times during the day Thursday.  A Wind Advisory is in effect Thursday for parts of the KWWL viewing area.
Wind Advisory

The wind will die down later Thursday evening, and we will be left with relatively quiet weather through Friday morning.

We are tracking our next storm system that will enter the United States this evening.  That storm will bring us our first dose of winter weather Friday and Friday night.  Here is the timing of that area of low pressure.
snow track

The center of the storm will be over eastern Wyoming at 6 AM Friday, and will track through northern Kansas by 6 PM Friday, and by 6 AM Saturday the low pressure will be around eastern Missouri and western Illinois.  The heaviest snow band will be along and north of that track.
The National Weather Service in Des Moines has already issued a Winter Storm Watch for Black Hawk, Bremer, Butler, Grundy and Tama counties for Friday and Friday night.  The La Crosse and Davenport forecast offices will hold off just a little bit longer on issuing a watch, since it is farther out in time.  They will most likely issue one within the next 24 hours.

winter watch
Temperatures will be in the middle and upper 30s as the storm system begins to enter the region Friday afternoon.  Initially, we will have some dry air to overcome.  Once the air becomes saturated, the precipitation could initially begin as a rain snow mix anytime after the noon hour Friday.  As the afternoon goes on, and the air cools, the rain will eventually switch over to all snow, and continue through early Saturday morning.  This means the Friday evening commute could be tricky, so keep that in mind.  With temperature around freezing (32°), this snow will be a “wet” snow.

Even though the snow will come to an end on Saturday morning, our issues won’t be completely over.  The wind will pick up and could blow the fallen snow around, reducing visibility and causing travel issues.

As far as snowfall amounts, early indications point to widespread 1 to 3 inch totals, with a swath of 3 inches or more in eastern Iowa.  This all depends on the exact track of the low pressure, how quickly the onset of the precipitation starts/changes over to snow, how much moisture is available, and the rate at which the snow falls.  Another factor to keep in mind is how quickly soil temperature drops over the next 48 hours, which as of Wednesday were averaging right around 50°.
soilt_day1

We are around that time of year where we typically receive our first inch of snowfall.  Here is the climatological average, along with the first inch of snowfall the past three years.

first inch

Stay with KWWL Storm Track 7 for the latest forecast, as we get a better idea on the track of the storm.

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Posted under Uncategorized

This post was written by Kyle Kiel on November 18, 2015

Friday Afternoon Update on the Weekend Snow

9:30 PM UPDATE to include the WINTER STORM WATCH.

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The sky will be mostly clear tonight.

Jan 30 Vis Sat

Low pressure is forecast to move east across Missouri Sunday bringing snow to Iowa.

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Clouds increase early Saturday morning with snow developing late in the afternoon (mainly after 3 pm). Here is forecast where the snow should be at 7 PM Saturday.

Blog Graphic 1

Snow becomes widespread across Iowa during the evening. Snow continues through Sunday morning before tapering off in the afternoon. Heaviest of the snow will fall from 10 PM Saturday through noon Sunday.

Expect hazardous conditions on the road Saturday evening through Sunday night.

Here is the latest snow forecast.
Blog Graphic 5

 

The gusty northeast wind will increase Saturday night and remain windy through Sunday blowing. This will cause blowing snow and at times reduced visibility.  The strongest wind will be from midnight Saturday through about 8 PM Sunday.

Jan 30 Wind Forecast

Sunday will be much colder with wind chills during the day near zero or slightly below.  Temperatures remain in the teens throughout the day.

Clouds clear late Sunday night giving us sunshine to start Monday. Clouds increase in the afternoon as we track the next chance of snow to be here Tuesday morning into Wednesday morning.

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Posted under Update

This post was written by Schnack on January 30, 2015