Good-bye 80′s (for now)

As the saying goes, all good things must come to an end.  Same with our stretch of warm and sunny weather.  For the last week, we’ve had highs of at least 75, with the last 5 days bringing highs in the low 80′s (and no mugginess!  That’s key in my book).  That all changes tonight.

A strong cold front worked through the area, and dropped temperatures in an impressive fashion.  Ahead of the front, we had temperatures in the 80′s with a nice light breeze. (Images at 3 p.m.).

Stateline temperatures at 3 pm Stateline winds at 3 pm

The front then works through Lake Geneva and southern Wisconsin.  Notice the drop off in temperature (23 degrees within 3 hours for Lake Geneva!) and the change in wind direction (key for a front- the wind changing direction to as ushers in a different air mass). (Images at 6 p.m.)

Stateline temperatures at 6 pm Stateline winds at 6 pm

Finally, the front hits the Stateline.  Temperatures plummet into the 60′s with the wind picking up and changing direction. (Images at 8 p.m.)

temp 3 wind 3

Here is the temperature trend in profile.  You can see the definite 16 degree drop off after the front worked through (and it’s neat how the 12 trend is almost symmetrical for the day).

Temperature trend at the Rockford airport, from 9 a.m. to 8 p.m.

Monday’s temperature trend at the Rockford airport

Better yet, check out how the front brought different results for Chicago and Milwaukee (O’Hare measured a 20 degree drop in ONE HOUR!  Wow!).  Talk about abrupt changes!

Temperature trend at Chicago's O'Hare International Airport

Temperature trend at Chicago’s O’Hare International Airport

Temperature trend at Milwaukee's General Mitchell International Airport

Temperature trend at Milwaukee’s General Mitchell International Airport

So how will this new week play out?  Today’s front has some lasting effects, as we’ll only see the low 70′s for highs at the warmest this week.  This week will be a roller coaster, with warm-ups for Wednesday and Thursday, then more drops late in the week to the 60′s and 50′s.  Much needed rain is coming, too, on Thursday.  Hold on!

-Alex Kirchner

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This post was written by Alex Kirchner on September 29, 2014
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Going For Two

What a week we’ve had!  Sunshine and warmth every day, which each day a little warmer than the last.

Highs slowly climbed into the lower 80's this week thanks to sunny, quiet weather

Highs slowly climbed into the lower 80′s this week thanks to sunny, quiet weather

What made this Friday in particular so nice, was that the weather didn’t take a turn for the worst, like we’ve had lately.  Counting today, 3 out of the last 5 Fridays have had horrible weather for outdoor events: thunderstorms, lightning, wind, and bone-chilling dampness and cold.

Stormy and sometimes cold weather impacted high school football games 3 weeks in a row, in addition to impacting other outdoor events

Stormy and sometimes cold weather impacted high school football games 3 weeks in a row, in addition to impacting other outdoor events

There were unfortunate impacts on our typical Friday night events, with lightning and rain delays and cancellations for Friday night high school football, and the Rockford City Market was cancelled two weeks in a row because of thunderstorms and unpleasant cold and damp weather.  These, of course, are wise decisions to keep everyone safe, but they do put a damper on the last few nice Fridays before winter sets in. I think that’s why today’s “2-point conversion” (or 2-Friday conversion) felt a little extra nice- we had splendid weather for Friday night under the lights in a row.

Valid Saturday, Sep. 27 to Sunday, Sep. 28

Valid Saturday, Sep. 27 to Sunday, Sep. 28

Looking ahead, make sure you get outdoors and enjoy the gorgeous weather this weekend!  80′s, sunshine, and low humidity should add up for a beautiful weekend.  Enjoy!

-Alex Kirchner

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Posted under event, warm up, weather

This post was written by Alex Kirchner on September 26, 2014
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Wash, Rinse, Repeat

Now that we’ve officially entered the first week of Fall, we’ve all got sweaters, boots, apple cider donuts and football on our minds, right?

Wrong.

You may want to replace those boots with sandals and the apple cider with  lemonade. Feel free to keep the football thoughts though ;) Our first week of fall is actually taking steps toward more summer-like weather. Did you enjoy the weather yesterday? Plenty of sunshine, calm winds, upper 60′s. Get used to it!
9-23 blog1

Wash, Rinse, Repeat. That’s the forecast through the rest of the week. BUT before you throw in the soap….
9-23 blog 2

 

Turn up the heat.

We’ll see high pressure continue to bring us sunshine this week, as well as calm winds. We could pick up a few clouds toward the end of the week due to a disturbance to our west, however high pressure helps to keep rain chances away. In addition to the sunny sky and light wind, we’ll see temperatures climb.
Today, temperatures top out in the low 70′s. By the end of the week, we’ll be looking at temperatures in the mid to upper 70′s.

Happy Fall, all!

-Morgan Kolkmeyer

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Posted under science, sunlight, warm up, weather

This post was written by Morgan Kolkmeyer on September 23, 2014
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Wrapping Up Summer

We are back in business!  The 13 Weather Blog has been on hiatus for a little while, but you should start to see regular posts on here again.  I promise to not make them as wordy as this one will be, either!

You’ve probably noticed that there are some new faces here at the 13 Weather Authority.  Here’s a quick little introduction for myself, in case you missed it: I’m Chief Meteorologist Alex Kirchner.  I’m originally from Racine, WI, and have spent the majority of my life living in the Midwest.  Before coming to Rockford, I was the morning meteorologist at KCWY in Casper, WY and at WXOW in La Crosse, WI. I’m a Certified Broadcast Meteorologist, as awarded by the American Meteorological Society. This means my graphical content, my presentation skills, and my explanation of the weather and the science behind it has been tested and considered high quality by top meteorologists from around the nation.

While the faces have changed, who we are as a weather team has not: The 13 Weather Authority.  We will always strive to be that, day in and day out- the authority you turn to for all things weather, good or bad.

That’s enough out of me for now, so let’s chat about some weather, shall we?

The calendar is almost to the Autumn season, so we are doing a little countdown for the last few days of summer, and providing little tidbits about Summer 2014.  This entry will cover numbers 5 and 4:

Autumn 2014 starts Monday night

Autumn 2014 starts Monday night

It has been an interesting one so far.  At times, the weather has felt more like an extended spring, with very few days of hot, muggy weather.  We still had a handful of typical summer soakers to hit the Stateline, however.

4 days saw rainfall over 1" during Summer 2014

4 days saw rainfall over 1″ during Summer 2014

The four days are were: June 30 (1.32″), July 12 (1.35″), August 1 (1.35″), and August 21, with a whopping 2.24″ of rain.  The August 1st rain set a new record for most rainfall ever on that date.  In general terms, we should end up around to slightly above average for the summer season.  There were plenty of dry stretches in between the days that featured soaking rain.  Overall, that’s a good thing: while not that consistent, we didn’t end up with too much rain, or so little that drought formed.

So there you have it!  Numbers 5 and 4!  We will be bringing to the rest of the facts about Summer 2014 each day as we close in on the Autumn season.

-Alex

 

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This post was written by Alex Kirchner on September 18, 2014
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It Rained; It Poured

Scattered showers and thunderstorms pulsed up across northern Illinois and southern Wisconsin on Friday. While not everyone got wet, those who did got soaked! So much rain fell in the Forest City that Flash Flood Warnings were issued. Standing water was everywhere.

august1st

A new record was achieved in Rockford. The airport picked up 1.35 inches of rain in about two hours on August 1, 2014. This set the record for maximum daily rainfall. In other words, it has never rained so much on any August 1st since records began in 1906. The old record for maximum daily rainfall was 1.32 inches in 2000.

-Joe

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Posted under 13 Climate Authority, rain, record weather, statistics, weather

This post was written by qni_it on August 2, 2014
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Cool in July

It’s official! July 2014 was the third coolest July on record in Rockford. Most of us are probably not surprised by this! After all, we only hit 90 degrees once that month. Climate history in the Forest City began in 1906. July 2014 has tied with July 1992 and July 1996 as the third coolest of all time. There have only been two other Julys cooler than this year.

july3rd

Here are the statistics! Our high temperature averaged out to 79.2 degrees which was 5.3 degrees cooler than normal. Our low temperature averaged out to 59.1 degrees, or 3.9 degrees cooler than normal. When factoring in highs and lows, July 2014 had a temperature average of 69.1 degrees. The coolest July on record occurred just five years ago in 2009, with an average temperature of 67.0 degrees. To put this into perspective, a normal July has an average temperature of 73.8 degrees.

-Joe

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Posted under 13 Climate Authority, record weather, statistics, weather

This post was written by qni_it on August 2, 2014
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Rain is a Good Thing

Thanks to the spotty nature of our shower and thunderstorm activity over the last couple of weeks, many of us are looking for some beneficial rainfall. The weather observation site at Chicago Rockford International Airport reported a just few sprinkles the last two days. The last two weeks have been nearly bone dry across the area as well. Our lawns, gardens, and farm fields are thirsty!

June Surplus, July Deficit

June Surplus, July Deficit

Meteorological summer kicked off in a wet fashion. The month of June was the 8th wettest June on record in Rockford with 8.06 inches of rainfall. The first half of July followed suit with 2.44 inches of rain falling through the 15th. The second half of July has been anything but rainy. Just 0.02 inches of rain fell in Rockford from July 16th through July 30th. The month is now in the red for normal rainfall, down 1.35 inches.

Beneficial Rain Not in the Forecast Through the Weekend

Beneficial Rain Not in the Forecast Through the Weekend

Looking ahead through this weekend, we will hang onto the slight chance for a few showers (even a rumble of thunder Friday). Since these isolated showers will not affect every corner of northern Illinois and southern Wisconsin, rainfall totals will be slim unfortunately.

-Joe

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Posted under 13 Climate Authority, FutureTrack, rain, weather

This post was written by qni_it on July 30, 2014
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Staying Relatively Cool

Tuesday was the hottest day of the summer so far. Rockford clocked in at 90 degrees for just the second time this year. But now we are back to below average temperatures….and overall, it looks to stay that way for a while.

Long range forecasting models continue to show a northwest flow weather pattern for the rest of July. The jet stream will bring in an airmass originating from northwestern Canada, keeping the heat confined to the southern United States.

July: High Probability of Below Average Temperatures

July: High Probability of Below Average Temperatures

Generally speaking, temperatures have a high likelihood of remaining below our climatological average. Statistically speaking, our average high for the rest of July is 84 degrees. Our average low is 63 degrees. Many of the upcoming days will only see highs in the 70s and lows in the 50s.

Looking ahead to August, it appears the trend for below average temperatures will continue. That’s not to say we won’t have a hot and humid day every now and then. However, data compiled through the National Climatic Data Center (NCDC) suggests that odds are about one-third higher than usual for cooler-than-normal temperatures for much of the upper Midwest, including northern Illinois and southern Wisconsin.

August: Moderate Probability of Below Average Temperatures

August: Moderate Probability of Below Average Temperatures

As far as rainfall goes, many of us could use a few showers. Wednesday marked the 8th day in a row without rain at RFD Airport, the longest such dry streak of the year. The chance of rain will increase Friday and into the weekend.

Next Two Weeks: Near-Average Rainfall

Next Two Weeks: Near-Average Rainfall

Over the course of the next two weeks, model trends indicate a near-normal rainfall forecast. “Near-normal” means between an inch or two of rainfall.

-Joe

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Posted under 13 Climate Authority, statistics, weather

This post was written by qni_it on July 23, 2014
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First of the Season

It took one month since the summer solstice arrived, nearly two months since meteorological summer began, and 53 days since we last reached this threshold. I’m talking about, of course, a 90-degree temperature in Rockford!

90° on Tuesday

90° on Tuesday

For the first time this summer and only the second time this year, the Forest City clocked in at 90 degrees on Tuesday afternoon. Heat index values rose into the 100s across much of the Stateline, making it the hottest and hottest-feeling day of the summer.

Area High Temperatures on Tuesday

Area High Temperatures on Tuesday

Now typically this shouldn’t be such a big deal. But with the way this summer has progressed, 90 degrees is somewhat out of the ordinary! A typical summer in Rockford averages around eight 90-degree days. With July almost over, we have some catching up to do! At this time last summer, we already had seven 90-degree days and ended the season with a total of eleven. In the summer scorcher of 2012, we had a total of 42 days with high temperatures at or above 90-degrees, including six days at or above 100-degrees.

Don’t expect anymore 90s anytime soon. It appears we will remain below normal through the rest of the month.

-Joe

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Posted under 13 Climate Authority, statistics, weather

This post was written by qni_it on July 22, 2014
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Brief Taste of Heat & Humidity

The hottest day of the month—and potentially the hottest day of the summer so far—lies ahead of us on Tuesday. High temperatures will rise into the upper 80s and flirt with 90 degrees by the afternoon. It’s going to be hazy, hot and humid. Dew point values will rise into the 70s giving the air a tropical-feel.

Flirting with 90° Tuesday

Flirting with 90° Tuesday

Combining our air temperature and relative humidity gives us the heat index. The heat index is more or less a “real-feel” index when outside in a hot and humid airmass. The index Tuesday afternoon will reach the middle and upper 90s across northern Illinois and southern Wisconsin. If you’re going to be outside during the heat of the day, make sure to drink plenty of water and dress appropriately.

Feeling Pretty Hot

Feeling Pretty Hot

By Tuesday evening and night, a cold front will slide through the area. This will bring some scattered showers and thunderstorms.

Threatrack Level 2 - Low Risk

Threatrack Level 2 – Low Risk

There is a chance for an isolated stronger thunderstorm or two. Heavy rain and gusty wind are the main concerns. There is a small window for thunderstorm development before the front passes through and our airmass changes again. Cooler, less humid air is on tap for Wednesday through Friday with highs in the upper 70s.

-Joe

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Posted under severe weather, warm up

This post was written by qni_it on July 21, 2014
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