Hot/Humid 1 More Day

Forecast Bar

UPDATED at 4:30 PM

Tonight: Partly cloudy, warm and humid with a 20% chance of showers/storms. Low: 73-74. Wind: S 10-15 mph.

Tuesday: Partly cloudy, hot and humid with a 20% chance of showers/storms. High: 90-92. Wind: SW 10-20 mph.

Tuesday Night: Mostly clear. Low: 64-68. Wind: N 5-15 mph.

Wednesday: Mostly sunny, cooler and less humid. High: upper 70s.

Thursday: Mostly sunny. High: upper 70s.

Friday: Partly cloudy with a 20% chance of showers/storms. High: upper 70s.

Saturday: Partly cloudy. High: low 80s.

Sunday: Partly cloudy with a 20% chance of showers/storms. High: near 80.

Monday: Partly cloudy. High: upper 70s.

Weather Extra Bar

It is not a comfortable day for many. The heat index as of 4 pm was ranging from 87 to 95 across eastern Iowa with the heat index close to 110 in southwest Iowa.

July 21 Heat Index

The HEAT ADVISORY remains in effect through Tuesday evening from Waterloo westward. Areas in the heat advisory will see the heat index Tuesday from 95-105. Areas not in the heat advisory will have the heat index near 95.

July 21 Heat Advisory

The good news, if you don’t like this heat and humidity, is that it will end as fast as it arrived. A cold front is forecast to bring a slight chance of a shower/storm Tuesday afternoon/evening…many places will remain dry. It is also going to bring cooler and less humid air back to the region. Here is the WPC forecast position of the cold front Tuesday evening.

July 21 Tue Sfc Map

The below normal temperatures continue through the weekend and possibly longer. The 8-14 day outlook from the Climate Prediction Center favors below normal temperatures into early August and near normal precipitation.

July 21 8to14 day outlook

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This post was written by Schnack on July 21, 2014

Heat Index Could Top 100 Degrees

Forecast Bar

UPDATED at Sunday afternoon…

Tonight: Mostly clear and humid. Low: 65-68. Wind: S 5-15 mph

Monday: Mostly sunny, hot and humid. High: 87-91. Wind: S 10-20 mph.

Monday Night: Partly cloudy, warm and humid with a 20% chance of a storm across northern Iowa. Low: 70-73. Wind: S 5-10 mph.

Tuesday: Partly cloudy, hot and humid with a 30% chance of showers/storms. High: near 90.

Wednesday: Partly cloudy and humid. High: low 80s.

Thursday: Mostly sunny. High: upper 70s.

Friday: Partly cloudy. High: near 80.

Saturday: Partly cloudy with a 20% chance of showers/storms. High: low 80s.

Sunday: Partly cloudy. High: near 80.

Weather Extra Bar

The well advertised HOT days (Monday/Tuesday) are almost here. Temperatures tonight will drop to the middle and upper 60s as the humidity level increases. High temperatures will be near 90 Monday and a few degrees warmer Tuesday. Dewpoints will be in the 70s and when you combine those the heat index could be as high as 105 degrees in the afternoon.

A HEAT ADVISORY has been issued for Monday afternoon through Tuesday evening for a large part of Iowa. The areas not under an advisory may not reach advisory criteria Monday, but probably will Tuesday. The National Weather Service will hold off on the advisory right now for Tuesday. I would guess they will issue one Monday morning for Tuesday to cover the rest of eastern Iowa.

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Advisory or no advisory…it is going to be HOT and HUMID Monday and Tuesday.

Make sure you check the back seat of the cars and make sure there is no child or dog left in the car…especially during these hot days.

Heat Back Seat

A cold front is forecast to cross the state Tuesday night with a chance of showers/storms. At this point it doesn’t appear any storms would be severe or widespread. We will continue to track the situation and let you know of any changes…if needed.

By Wednesday, cooler and less humid air will move back in with temperatures in the upper 70s and low 80s and lower humidity. These conditions will continue through the rest of the weekend and into the weekend.

The 8-14 day outlook takes us into the first few days of August with below normal temperatures expected.

July 20 Below Normal Temps

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This post was written by Schnack on July 20, 2014

Hottest Days of the Summer…So Far

Forecast Bar

UPDATED at 4:30 PM

Tonight: Partly cloudy. Low: 61-63. Wind: S 5-10 mph.

Sunday: Partly cloudy. High: 81-83. Wind: S 10-20 mph.

Sunday Night: Partly cloudy with a 20% chance of a shower. Low: 66-69. Wind: S 5-15 mph

Monday: Partly cloudy, hot and humid. High: near 90.

Tuesday: Partly cloudy, hot and humid with a 40% chance of showers/storms. High: near 90.

Wednesday: Partly cloudy and humid with a 20% chance of showers/storms. High: mid 80s.

Thursday: Mostly sunny. High: near 80.

Friday: Partly cloudy with a 20% chance of showers/storms. High: near 80.

Saturday: Partly cloudy. High: low 80s.

Weather Extra Bar

The temperatures and humidity continue to inch their way up. The humidity will be a little higher Sunday and increases Sunday night. The hottest days of the year, so far, are expected Monday and Tuesday. Not only hot, but it will be humid as well. Combine those together and you will get a potential heat index exceeding 100.

July 19 Heat

There is a chance of showers/storms Tuesday into Wednesday as a cold front pushes through and brings some relief. Here is the WPC forecast map for Tuesday morning.

July 19 Tue Front

High temperatures will back down to the low 80s and the humidity level will back off a little as well.

Here is an updated RAGBRAI forecast. Monday and Tuesday might be the hardest weather days to ride.

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This post was written by Schnack on July 19, 2014

Dry Through The weekend

Forecast Bar

UPDATED at 4:30 PM

Tonight: Mostly clear. Low: 60-62. Wind: S 5-10 mph.

Saturday: Mostly sunny. High: 79-81. Wind: S 10-15 mph.

Saturday Night: Partly cloudy. Low: 60-63. Wind: S 5-10 mph.

Sunday: Partly cloudy. High: low 80s.

Monday: Partly cloudy, hot and humid. High: near 90.

Tuesday: Partly cloudy, hot and humid with a 30% chance of showers/storms. High: near 90.

Wednesday: Partly cloudy and humid with a 20% chance of showers/storms. High: mid 80s.

Thursday: Partly cloudy. High: low-mid 80s.

Friday: Partly cloudy. High: mid 80s.

Weather Extra Bar

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This post was written by Schnack on July 18, 2014

Temperature and Humidity Increases

Forecast Bar

UPDATED at 4:30 PM

Tonight: Mostly clear. Low: 56-58. Wind: S 5-10 mph.

Friday: Mostly sunny. High: 77-79. Wind: S 10-15 mph.

Friday Night: Mostly clear. Low: 57-60. Wind: S 5-10 mph.

Saturday: Mostly sunny. High: near 80.

Sunday: Partly cloudy. High: low 80s.

Monday: Partly cloudy. High: upper 80s.

Tuesday: Partly cloudy with a 20% chance of showers/storms. High: upper 80s.

Wednesday: Partly cloudy with a 20% chance of showers/storms. High: upper 80s.

Thursday: Partly cloudy. High: mid 80s.

Weather Extra Bar

Our stretch of dry comfortable weather will continue through Sunday morning. The temperature and humidity levels will increase Sunday and remain pretty high most of next week as we get back to normal July weather conditions in Iowa.

It has been a pretty dry month so far for many locations in Iowa. Compare that to June where we were near monthly record rain totals. Here is a rain comparison from June to July (as of the 17th).

Blog Graphic 4

Due to the rain in June there is no longer any drought concern right now. The latest Drought Monitor data was release this morning.

July 17 Drought

There have been many years riders had to deal with hot and humid conditions during RAGBRAI. I guess you would expect those conditions since it is the middle of summer after all. This year it will be warm and humid with mainly dry conditions. Here is the forecast through next week.

Blog Graphic 1

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This post was written by Schnack on July 17, 2014

Fall Conditions During Summer

Forecast Bar

UPDATED at 4:30 PM

Tonight: Partly cloudy and cool. Low: 49-51. Wind: NW 10-15 mph.

Tuesday: Partly cloudy and cool. High: 69-71. Wind: NW 10-15 mph.

Tuesday Night: Mostly clear and cool. Low: 49-52. Wind: NW 5-10 mph.

Wednesday: Mostly sunny. High: low 70s.

Thursday: Mostly sunny. High: mid 70s.

Friday: Partly cloudy. High: upper 70s.

Saturday: Partly cloudy. High: near 80.

Sunday: Partly cloudy with a 20% chance of showers/storms. High: low 80s.

Monday: Partly cloudy. High: mid 80s.

Weather Extra Bar

Record Low Temperatures Tuesday:
Waterloo: 44 in 1967
Dubuque: 50 in 1967
Cedar Rapids: 47 in 1930
Iowa City: 49 in 1930

Record Cold High Temperatures Tuesday:
Waterloo: 67 in 1962
Dubuque: 63 in 1962
There are no official records kept for Cedar Rapids and Iowa City for this weather parameter.

The reason for this cooler than normal weather is associated to an upper level low pressure system. You can see low over the Midwest this afternoon. The low will move away from the area later in the week allowing warmer weather back into the Midwest.

July 14 500 mb map

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This post was written by Schnack on July 14, 2014

Rain Possible Friday Through the Weekend

Forecast Bar

UPDATED at 4:30 PM

Tonight: Increasing clouds with a slight chance of a shower/storm. Low: 63-65. Wind: S 5-15 mph.

Friday: Mostly cloudy with a 40% chance of showers/storms. High: 76-78. Wind: S 10-15 mph.

Friday Night: Mostly cloudy with a 60% chance of showers/storms. Low: 65-69. Wind: S 5-10 mph.

Saturday: Mostly cloudy with a 60% chance of showers/storms. High: low 80s.

Sunday: Mostly cloudy with a 30% chance of showers/storms. High: near 80.

Monday: Mostly cloudy with a 30% chance of showers. High: low 70s.

Tuesday: Mostly cloudy. High: near 70.   

Wednesday: Partly cloudy. High: low 70s.

Thursday: Mostly sunny. High: mid 70s.

 

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This post was written by Schnack on July 10, 2014

Rain Chances By Friday

Forecast Bar

UPDATED at 4:30 PM

Tonight: Clear. Low: 56-60. Wind: S 5-10 mph.

Thursday: Partly cloudy. High: 77-80. Wind: S 10-15 mph.

Thursday Night: Mostly cloudy with a 20% chance of showers/storms. Low: 62-65. Wind: S 5-10 mph.

Friday: Mostly cloudy with a 60% chance of showers/storms. High: upper 70s.

Saturday: Mostly cloudy with a 40% chance of showers/storms. High: low 80s.

Sunday: Mostly cloudy with a 30% chance of showers/storms. High: near 80.

Monday: Partly cloudy. High: upper 70s.

Tuesday: Partly cloudy. High: low 70s.

Wednesday: Partly cloudy. High: low 70s.

Weather Extra Bar

We will remain dry through Thursday evening. The next chance of showers/storms will be late Thursday night. A better chance of showers/storms will be Friday. At this point severe weather does not appear to be a concern. But as we continue to track any potential if things change.

Here is forecast map from the WPC showing the showers/storms in Iowa Friday morning. The inset map shows the rain potential Thursday evening to Friday evening.

July 9 QPF

The cold front will stall near the state and keep a chance of showers/storms in the forecast through the weekend. The humidity level increases a little bit Thursday and then Friday it gets real humid again with dewpoints getting close to 70 degrees…that is HUMID.

An upper level low will develop near the Great Lakes into Canada this weekend. Eventually the low will pull cool Canadian air south across a good part of the central and eastern US.  High temperatures will be in the low 70s. There is a potential for some 60s and that would be flirting with record cool high temperatures. Again this cool air will be next week.

July 9 500 MB

Earlier today you could see on the visible satellite image smoke from the fires in Canada. The NW wind aloft was pushing the smoke SE.

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This post was written by Schnack on July 9, 2014

Beautiful Through Thursday

Forecast Bar

UPDATED at 4:30 PM

Tonight: Clear. Low: 56-59. Wind: NW 5-10 mph.

Wednesday: Mostly sunny. High: 77-79. Wind: W 5-10 mph.

Wednesday Night: Clear. Low: 55-59. Wind: SW 5-10 mph.

Thursday: Partly cloudy. High: upper 70s.

Friday: Mostly cloudy with a 50% chance of showers/storms. High: near 80.

Saturday: Partly cloudy with a 30% chance of showers/storms. High: low 80s.

Sunday: Partly cloudy with a 20% chance of showers/storms. High: near 80.

Monday: Partly cloudy. High: upper 70s.

Tuesday: Partly cloudy. High: mid 70s.   

Weather Extra Bar

The next chance of showers and storms will be Thursday night into Friday. Here is the rain potential from Thursday evening through Friday evening.

July 8 QPF

The rain chances this weekend are slim as two weak cold fronts drift south across the Midwest. Cooler and less humid air is expected behind the fronts early next week.

The 8-14 day outlook favors cooler than normal temperatures and near normal precipitation.

July 8 Outlook

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This post was written by Schnack on July 8, 2014

Thunderstorm Chances This Weekend

Forecast Bar

UPDATED at 4:30 PM

Tonight: Mostly clear. Low: 58-60. Wind: S 5-10 mph.

Saturday: Partly cloudy with a 50% chance of showers/storms. High: 77-80. Wind: S 10-15 mph.

Saturday Night: Mostly cloudy with a 30% chance of showers/storms. Low: 65-67. Wind: S 5-10 mph.

Sunday: Partly cloudy with a 50% chance of showers/storms. High: upper 80s.

Monday: Partly cloudy with a 20% chance of showers/storms. High: low 80s.

Tuesday: Partly cloudy with a 20% chance of showers/storms. High: low 80s.

Wednesday: Partly cloudy. High: near 80.

Thursday: Mostly sunny. High: near 80.

Friday: Partly cloudy. High: low 80s.

Weather Extra Bar

 

The weather will not impact the fireworks this evening. The sky will be mostly clear with temperatures in the mid-upper 60s.

There is a chance of showers/storms Saturday and Sunday. Some of your activities should have a plan B if it rains. The best chance of showers/storms both days will be in the afternoon. The storms Sunday could be severe. This is something we will be tracking through the weekend.

Here is the severe weather outlook area.

July 4 SVR WX

Rain amounts will be less than 1” in most locations this weekend. Isolated locations may be a bit higher underneath storms. Here is the rain potential through Monday evening.

July 4 QPF

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This post was written by Schnack on July 4, 2014