Excessive Heat Watch

posted in: Michigan Weather Forecast | 33

 


For myself anything over 80° is excessive when working outside unless the humidity is really low.  Temperature is a pleasant 58° at 7am this morning but this is going to change as the NWS has declared an Excessive Heat Watch from Friday afternoon through Saturday.

An Excessive Heat Watch is issued by the National Weather Service of the United States when the heat index is expected to be greater than 105 °F  across the northern states or 110 °F  across the southern states during the day, and/or nighttime low temperature will be at least 75 °F or higher for two consecutive days.

Note that even with the usual northern/southern criteria, local offices, particularly those with deserts or mountainous terrain, often have their own criteria. High values of the heat index are caused by temperatures being significantly above normal and high humidities, and such high levels can pose a threat to human life through conditions such as heat stroke.

Temperatures will be on the increase starting today, with even hotter conditions expected for Friday and Saturday. Temperatures will be in the 80s today, with 90s likely away from Lake Michigan Friday and Saturday. Heat indices will be around 100 degrees on Friday, with over 100 degrees on Saturday. Dry conditions are expected until Sunday.  I am seeing a projected low of 80° for Saturday night for Grand Rapids and mid to upper 70s for most of the rest of the area.

Temperatures will remain warm through most of next weeks with temperatures mainly in the low to mid 80s.  Below are the projected temperature and dew points for the next 4 days from the NAM models.  You can click to enlarge these.


 

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Jack Edwards
Jack Edwards
Jack Edwards
Jack Edwards

Cues continue With..”
The Jamies – Summertime, Summertime – YouTube
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Jack Edwards
Jack Edwards

Don’t Forget To Drink Lots of H2O
Eddie Money- Gimme some Water – YouTube
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Jack Edwards
Jack Edwards

Hot Tuna – Keep On Truckin’ – YouTube
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Jack Edwards
Jack Edwards

The Lovin Spoonful- Summer In The City – YouTube
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Jack Edwards
Jack Edwards

CUE-::-:-:->>>. Jerry Reed – When You’re Hot, You’re Hot – YouTube
https://m.youtube.com/watch?v=0rdF7o08KXw

Jack Edwards
Jack Edwards

Hey Folks Long Time No Cue. Hope You all are Having A Nice Summer.
Been Really Busy Lately Running Back and Forth To Doctors in GR.
Looks Like a Real Bonfid Heat WAAVVEE on Tap. Stay Cued For Some FRYday Morning HOT TUNES or CUES. PEACE!!

Mark (East Lansing)
Mark (East Lansing)

The Strawberry Moon is just coming up now in the SE and it is amazing.

Mr. Negative
Mr. Negative

Hopefully a few “summer days” are on the horizon. We’ll have to cobble together the few we receive this year, to determine wether or not it amounts to a summer. Fingers crossed for summer weather.

Mookie
Mookie

WOOD says get ready. The Excessive Heat Watch is expected to be upgraded into an Excessive Heat Warning soon.

Slim

Here is a good read on just how rare it is to have excessive heat watch in our area.

https://www.weather.gov/media/arx/research/HeatIndextsp_17.pdf

Slim

Mookie
Mookie

So if we get the 110 heat index they are saying that only happens 0.02% of the time in Grand Rapids in the summer. Woah!

INDY
INDY

This is what INDY calls a heat wave 95* or better as the eye can see on a weather map this could be one for the records hold on yeaaaa!! INDYDOG14!!

Mookie
Mookie

Latest GFS runs has 95-100 degrees for Lower Michigan for July 4th, 5th, and 6th. Wow!

INDY
INDY

Mookie this weekend is for you bud! Don’t forget the sun screen! Anybody wants to join me going to Holland beach tomorrow stay cool INDYDOG14!!

Mookie
Mookie

Bring on the heat! Perfect long weekend for the lake. That’s where I’ll be.

Andy W
Andy W

Oh man, with this 8 day forecast we won’t be hearing much from Rocky for a while! Starting with yesterday being ABOVE normal temperature wise, we are looking at a long run of ABOVE normal temp days coming! Who knew!?!??

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Jeff(Portland)
Jeff(Portland)

Going for more 90 degree days we have seen in awhile. One word “Hot”. It’s summer and this year it’s been hot.

Mookie
Mookie

Woah! What happened to it just being a “2-3 day heat wave” as some were calling it?

Jeff(Portland)
Jeff(Portland)

Lol.

Slim

While we are faced with the upcoming heat wave just to cool you off here is a look back at this past April when the Midwest was having one of its coldest April’s on record. Here in lower Michigan this is how April 2018 ended up.
The only location not in the top ten was Detroit. Here is the ranking of April 2018 across Southern lower Michigan
Detroit 13th coldest
Flint 1st coldest
Saginaw 2nd coldest
Grand Rapids 4th coldest
Lansing 8th coldest
Muskegon 3rd coldest
All rankings are per the NWS
Slim

Mookie
Mookie

“As for how hot it gets, we are in a classic position with the building upper high. The 1000/925 thickness forecast from the NAM, which typically does very well with those numbers would suggest highs near 100 degrees.” NWS GRR

Slim

One has to wonder just how humid it will become this weekend. Off to our SW the current DP’s are very high. In Missouri the DP now ranges from 70 to 79 in southern Illinois it is 72 to 79 in western Kentucky it is also 72 to 79 and in Iowa it is 70 to 79. Here in Michigan it is in the mid to upper 60’s in the south to upper 50’s to low 60’s to the north.
Slim

Slim

I am not sure how many “Heat waves” Grand Rapids has had over the years. Back in the 1930’s there were several that stand out but it was dry in those years so the humidity may have been lower. Of course we have no idea as to how long this hot period will last but in the recent past in 2013 Grand Rapids had a 7 day “heatwave” from July 14th to the 20th when highs were 91,95,93,95,96 and 88. In the very hot July of 2012 Grand Rapids had 2 hot heat waves the first one was from June… Read more »

Barry in Zeeland
Barry in Zeeland

Only home 1 day and I miss the cool dry air out West already. The second we stepped off the plane in GR it was like trying to breathe under water, just thick, dense air. Feels just miserable, and only looks worse in the coming days. On the positive side, best trip ever for my wife and I to celebrate 25 years of marriage!

Mark (East Lansing)
Mark (East Lansing)

Congrats on the milestone, and welcome back!

Slim

Welcome back.
Slim

Sandy (Hudsonville)
Sandy (Hudsonville)

Welcome back!! Congrats to you and your wife on 25 years of marriage.

INDY
INDY

100* degrees looking even better for Saturday stay tuned.. INDYDOG14!

Slim

Not sure if the “official” reading will reach 100 but a lot of back yards will. Back in 2012 on the day the “official” high was 104 I had 109 and have several pictures that show it. I will post them may be on this weekends post
Slim

Mookie
Mookie

Nice call, Indy! A lot of people thought you were crazy when you said it might hit 100 in GR. Now it’s looking better and better.

Mookie
Mookie

CPC keeps the heat on for at least 2 more weeks.
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Mookie
Mookie

First Excessive Heat Watch in 6 years! WOOD now has 88, 92, 95, 90, 88, 89, 90, 88. Talk about a hot and humid next 8 days!