Dry Conditions Across Eastern Iowa

We’ve had quite a stretch of dry weather across eastern Iowa.  October and November were generally dry months, and now that we are about halfway through December, we’ve only had a few hundredths of an inch of precipitation.  Parts of the KWWL viewing area are in the Abnormally Dry to Moderate Drought category.

The Weather Prediction Center’s 7 day precipitation forecast does not paint much moisture for Iowa.  However, we are watching the potential for rain and/or snow late next week.  It’s still too early in the forecast for details.

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Posted under Drought, Forecast Discussion

This post was written by Kyle Kiel on December 14, 2017

Light Snow and Windy Tonight

Light snow is forecast to move southeast across parts of eastern Iowa tonight. The timing of the snow would be after 7 or 8 pm to 3-4 am. Some locations could see around 1.0″ of snow. The wind increases tonight from the northwest at 15-25 mph. So where snow did accumulate it will be blowing around. Use caution if you travel tonight. Some roads might be slick due to the snow.

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Posted under Forecast Discussion, Winter Weather

This post was written by Schnack on December 8, 2017

Full Supermoon Tonight

Tonight is the last full moon of the year and also is a “Supermoon”.

The moon will appear bigger and brighter tonight….for those able to see it.

By around midnight, a warm front will be draped in southern Minnesota. That means eastern Iowa will be located in the warm sector ahead of a cold front. Scattered showers with an isolated thunderstorm track through tonight and that chance continues into Monday morning.

If you are looking to view the Supermoon tonight, it looks like you’ll have to travel. Good news? The next Supermoon comes in January 2018 so there isn’t too much wait time between events.

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Posted under Astronomy, Forecast Discussion

This post was written by Rachael Peart on December 3, 2017

Record Highs Possible Friday

Quiet weather continues tonight under a mostly clear sky. Lots of sunshine and a gusty south wind is on the way Friday morning.

During the afternoon, clouds and a few sprinkles are possible as the wind switches to the northwest. High temperatures are in the upper 50s and low 60s. There are near record levels.

The weekend is mostly sunny with highs in the mid to upper 40s. Monday is warmer with a gusty south wind and sunshine. Dry weather continues through the rest of the month.

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Posted under Forecast Discussion

This post was written by Schnack on November 23, 2017

Thanksgiving Forecast

A mild next few days are in store for eastern Iowa. We warm to slightly above normal for today.

With a warm front tracking through the area into Friday, even milder temperatures are expected beginning tonight. That’s great news for any shoppers later tonight or early Friday morning. 

Winds today stay on the calmer side tonight, but shopping near sunrise Friday may come along with breezy winds. Winds stay breezy through much of the day tomorrow as a cold front tracks through.

Once the front pushes through, cooler air returns to eastern Iowa. High temperatures however stay above normal through the middle of next week.

From the Storm Track 7 weather team, we wish you a happy Thanksgiving.

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Posted under Forecast Discussion, Holiday

This post was written by Rachael Peart on November 23, 2017

Thanksgiving Travel Weather

It’s one of the busier travel weeks of the year, as Americans head to their Thanksgiving destination to enjoy a good feast.

Here in eastern Iowa, the last couple years of weather on or around Thanksgiving have not been ideal.  Last year, we had rain the day before Thanksgiving, and on Thanksgiving itself it was pretty chilly with temperatures in the 30s and 40s and not much sunshine.  Two years ago in 2015, we had some heavy rainfall across the region the day before Thanksgiving, and even Thanksgiving itself.

This year, however, our weather is looking a little more tame.  Here’s the travel forecast for eastern Iowa if you’re hitting the road in eastern Iowa.  It will be a little chilly Wednesday, with seasonable temperatures on Thanksgiving itself.

If your travels take you elsewhere across the United States, overall, the weather shouldn’t be much of an impact.  Of course, if you’re flying, you’ll want to check in with your airport and airline ahead of time.

  

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Posted under Forecast Discussion, Holiday, Miscellaneous

This post was written by Kyle Kiel on November 19, 2017

Windy Wednesday

You might have woken up this morning to a little bit of a breeze. Winds strengthened early this morning as a system tracks away from the area. Strong winds stick with us through the day. In a previous blog, we discussed the basics of what causes the wind to blow (click here for the Wind FAQ post).

In the two photos below, the thick black lines represent the isobars – lines of equal pressure. Note how many isobars there are over the state of Iowa versus Arkansas or Alabama. More isobars means stronger winds over an area. Isobars in the next two photos are plotted every 2 millibars. Click on a photo to enlarge it.

National analysis of sea level pressure and winds. 9AM CST November 15, 2017

 

Zoomed analysis of sea level pressure and winds. 9AM CST November 15, 2017

The graphic below shows the isobars in blue as well as the station models across Iowa. A station model plots multiple weather variables in a compact package. Winds on a station model are noted by a single line extending from each small circle. If there is no wind, there will only be a circle.

Each of the station model plots below feature the main line as well as smaller barbs extending from it. The barbs depict different wind speeds in knots (kts). Long barbs represent 10 kts and short barbs represent 5 kts. The direction of the main line shows the direction from which the wind is coming.

Isobars are the blue lines below and are plotted for every millibar.

Iowa analysis of sea level pressure and station models. 9AM CST November 15, 2017 (Iowa Mesonet)

More strong winds move in later this week.

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Posted under Forecast Discussion, Windy

This post was written by Rachael Peart on November 15, 2017

Thanksgiving Week Outlook

Thanksgiving is next week and that means the cool season holidays are officially here. Many will be traveling over the next couple weeks. The Climate Prediction Center (CPC) calls for near normal temperatures from November 20-24 (Monday through Friday) for much of the Mississippi River Valley.

CPC Temperature Forecast for November 20-24, 2017

The precipitation outlook favors drier than normal conditions for most of eastern Iowa.

CPC Precipitation Forecast for November 20-24, 2017

Continue to check our weather page as the forecast is fine tuned in the coming days.

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Posted under Forecast Discussion, Holiday

This post was written by Rachael Peart on November 15, 2017

Threat for Severe Weather

We could see some active weather later this week in parts of the Midwest. Parts of southeastern Iowa are included in the outlook for potential severe weather Friday and Friday night. Adjustments to this outlook area is possible in the next few days.

As the storm approaches Iowa from the west Friday, the wind will be gusty from the south warmer with highs in the low 50s. Rain is likely in eastern Iowa with the potential for severe storms to our southeast.

Friday Morning Forecast

Saturday Morning Forecast

After the storm moves into the Great Lakes area, Friday night and Saturday, it turns colder around here with a strong northwest wind. Rain Friday night will end as some light snow. Little to no accumulation is expected at this time.

Continue checking back for forecast updates.

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Posted under Forecast Discussion

This post was written by Rachael Peart on November 13, 2017

Cold Weekend Nights

The Halloween weekend is looking like a chilly one for eastern Iowa. Friday begins a stretch of below normal temperatures to close the month of October.

Normal highs for late October range from the mid to upper 50s. Friday’s high temperatures only reach the upper 30s to low 40s for most of the area with strong winds. Overnight lows fall into the upper 20s to low 30s.

Saturday remains chilly along with breezy winds, with highs in the 30s and 40s again. Lows Saturday night into Sunday morning most likely tumble into the 20s for all of eastern Iowa.

The deep blue and violet colors indicate cold, arctic air. That air engulfs the country’s midsection Saturday and Sunday.

As the cold fall air tracks into eastern Iowa, expect many locations to see their first frost and/or freeze this weekend.

 

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Posted under Forecast Discussion, Temperatures

This post was written by Rachael Peart on October 25, 2017