Isobars and Wind Barbs

posted in: Michigan Weather Forecast | 20

An Isobar is a line drawn on a weather map or chart that connects points at which the barometric pressure is the same.  This aids in a visual depictions of the position of high and low pressure centers.  Close spacing of isobars would mean that the pressure gradient force of air would be greater, and in simple terms, there would be stronger winds around the area.

The use of wind barbs show both wind direction and speed. Think of them as arrows in terms of direction, which each barb (pennant) at the tail representing speed. … A full blacked pennant or triangle is 50 knots of speed. A full line on the wind barb is 10 knots of speed. One knot equals 1.15mph.

Below is the isobar and wind barb map for today through this weekend. (click to enlarge).


We have a strong storm system moving in for the weekend which may move right over the state bringing another mixed bag of precipitation, however our main concern will be the winds on Sunday which could be in the 45 to 50mph range with lake effect snows being blown around after the passage of the storm.  Sorry to say this may usher in cold air for the rest of the month into March with another system coming in on Tuesday refreshing our snow cover.  We will be tracking these and have more details tomorrow and Sunday, and of course from our bloggers here.


 

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Sandy (Hudsonville)
Sandy (Hudsonville)

i am looking forward to Spring coming mid March if not sooner! I just keep telling myself that under all this snow is Spring! LOL!! Today was so nice and sunny – I caught myself looking for wild pansies in the stones near the house.

Rocky (Rockford)
Rocky (Rockford)

Spring? In your dreams! The northern 1/2 of the country will be seeing plenty of snow well into March! Bring it!

https://www.instantweathermaps.com/GFS-php/conussfc.php?run=2019022118&time=PER&var=ASNOWI&hour=384

Rocky (Rockford)
Rocky (Rockford)

What a winter with tons more cold and snow yet to come! Mark it down!

Mr. Negative
Mr. Negative

Spring?…hillarious. March colder than February. Your future?…20s to teens, to single digits. We are nothing more than the Southern Arctic…must be some new type of game to pretend we’re not.

Rocky (Rockford)
Rocky (Rockford)

The warm weather fanatics are always begging for spring and hoping it arrives in February! They are always WRONG!

Wild bill
Wild bill

George just said, looks like most of March will be colder than normal… Our snow customers are way over their trip limits, so it’s starting to cost them a lot of money… look for the price of McDoubles to go up in price (lol) as McDonald’s is one of our biggest customers. Think spring!!!!!!

Slim

The area is under a Winter Storm Watch but as it looks like wind could be the issue we should be under a High Wind Watch. Not sure if GRR has one but there is such a product as a High Wind Watch, High Wind Warning: Take Action! Sustained, strong winds with even stronger gusts are happening. Seek shelter. If you are driving, keep both hands on the wheels and slow down. NWS offices issue this product based on local criteria. High Wind Watch: Be Prepared! Sustained, strong winds are possible. Secure loose outdoor items and adjust plans as necessary… Read more »

Rocky (Rockford)
Rocky (Rockford)

The wsw is for snow and near blizzard conditions! Get prepared now!

INDY
INDY

Winter storm watch Sunday into Monday ..INDY

Slim

Should be a High Wind Watch instead
Slim

Rocky (Rockford)
Rocky (Rockford)

Blizzard conditions baby!

INDY
INDY

Seeing a high of 18* degrees next Wednesday interesting especially so close to March standards …INDY!!

Jeff(Portland)
Jeff(Portland)

Rain for the weekend .. Let the melt continue !! Spring next month !!! Robins are on the way …

Mark(East Lansing)
Mark(East Lansing)

The first cherry blossoms are appearing in Washington DC. In two weeks, our average high will be in the 40s. Spring is near.

INDY
INDY

Some big time artic air or should I say cold
air coming for the first half of the March with that said the snow totals should keep going up!! INDY

Slim

This weekend we here in west Michigan look to be on the warm side of this system. It looks like rain with a chance of thunder then a dry slot with wind and maybe some back side snow. The big issue looks to be the wind. Then it should turn colder then average for about 2 weeks or so. I think spring will start in mid March.
Slim

Mookie
Mookie

More 40’s and rain this weekend. Another horrible weekend for winter sports! Winter is on life support.

Jeff(Portland)
Jeff(Portland)

Facts !!!

Rocky (Rockford)
Rocky (Rockford)

Nice write up about the wind! Sunday we could be looking at blizzard conditions and then 2 solid weeks of mid winter like conditions! Rock n roll baby!