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Category: Snow

Winter Storm “Atticus” Wrap-up

at 9:17 AM by John W.

Beginning around 9 PM on Friday December 10th and lasting through about 2 PM on Saturday the 11th, an area of deep low pressure tracking near the Straits of Mackinac resulted in significant snowfall at our station near downtown Marquette. Overall, we measured 7.8″ of heavy, wet snow, although up to an additional inch may have fallen and gone unrecorded due to slightly above freezing temperatures, wind and sunshine. Our storm total was similar to a nearby report in Trowbridge of 8.5″.

Our highest wind gust during that period was 37 mph in the 11 AM hour. The 11th was the windiest day of the month so far in terms of sustained winds.

Our only real impact was time spent removing snow from the property afterward. No power outages were experienced during the storm.

For a detailed hourly breakdown, please check out our Weather History page and select the dates above (Dec 10-11, 2021). We don’t offer hourly precipitation data, but all other parameters like wind, temperature, and pressure will be available.

Category: Snow, Storm Report, Weather

Jan ’21: Warm & Dry & A Somewhat Clear Sky

at 11:16 AM by John W.

Marquette just recorded its least snowy January on record (1857 – present)! The official station at the Water Treatment plant recorded a mere 3.5″. Normally, we receive almost 30″.

Melting that snow and combining it with whatever ice and rain also fell, amounted only to 0.77″. That’s less than half the 30 year normal amount of 1.83″.

Also, the mean monthly temperature of 24.7° in January ties for 8th on the list of all time warmest with 1878.

Here at our station near the Jacobetti Home for Veterans, we recorded 10.4″ of snowfall (0.72″ of liquid) in January. Whereas the last 3 winters we averaged 29.4″.

Our station’s monthly mean temperature (as measured from 8 AM to 8 AM and rounded to whole numbers) was 23.9°. That’s +5.5° compared to our station’s normal.

Continue reading “Jan ’21: Warm & Dry & A Somewhat Clear Sky”

Category: Climate, Records, Snow

Live Blog (April 12-13, 2020)

at 9:00 AM by John W.

NOTE: Entries are in reverse chronological order. This page does not automatically update.

  • 4/13/20 3:50 PM
    Winds continue drifting westward, shutting down lake-effect snow production. We’ve had no measurable snow since 12 PM. Humidity has dropped to around 65%. This should spell the end of our snow storm. I see that the National Weather Service has pulled down the Winter Storm Warning that was supposed to last through tomorrow morning. Gusty winds should subside over time, especially after sunset. But do mind the lakeshore flood warning and stay clear of Lake Superior as it takes some time to settle down after winds abate. Anyway, that ought to do it for our live blog. Again, our storm total was 17.2″ as measured 1 block north of the Jacobetti Veteran’s Home near downtown Marquette.
  • 4/13/20 2:45 PM
    Some light flakes continue to fly but nothing significant. The focus now is on the wind. Even as the trough of low pressure crosses into Quebec, it continues to deepen, drawing air from areas of higher pressure, such as Marquette, toward it. How big is this system? Well, it has 5 frontal boundaries extending from it, including 2 cold fronts stretching down into the Gulf of Mexico!
  • 4/13/20 1:15 PM
    After declining for about 4 hours, winds have kicked back up in the last hour as the surface low exits the region. Gusts nearing 35 mph have been observed here. Snowfall has tapered off to light snow showers as winds have turned solidly to the northwest.
  • 4/13/20 12:20 PM
    Light snowfall. Latest measurement (10 AM – 12 PM): 2.1″. Event total: 17.2″
  • 4/13/20 10:00 AM
    Moderate snowfall. Visibility 1/4 – 1/2 mile. Snowfall measurement (7 AM – 10 AM): 1.2″. Event total: 15.1″
  • 4/13/20 9:30 AM
    Some lake-enhanced snowfall could set up soon, lasting at least into the early afternoon hours. Conditions are somewhat marginal, so not expecting too much additional if the lake gets involved. Knock on wood because this is spring in the U.P. and Mother Nature likes to take a shot at us this time of year. Currently less than 1/4 mile visibility due to blowing snow.
  • 4/13/20 8:55 AM
    Looks like we’ve bottomed out in surface pressure. Our gauge recorded 998.7 mb (29.49″) MSLP at ~ 7 AM EDT. The center of the low is located near Sault Saint Marie. It should slowly march NE into Quebec this afternoon. We should be nearing the top of the mountain in terms of winds within the next hour or two (if we haven’t arrived already).
  • 4/13/20 8:25 AM
    Moderate snowfall continues. Visibility is generally 1/4 – 1/2 mile but localized blowing snow creates near whiteout conditions at times. Gusty northerly winds (30-35 mph gusts) continue to buffet the city.
  • 4/13/20 7:30 AM
    Winds continue to ramp up over the last several hours. The peak wind gust measured so far here is 34 mph but 40 mph does not seem not out of reach by later this morning. Fortunately, the moderate to strong winds throughout this storm have kept power lines free of snow.
  • 4/13/20 7:00 AM
    Moderate snowfall. 1/4 – 1/2 mile visibility. Snowfall measurement (9 PM – 7 AM): 8.2″. Event total: 13.9″
  • 4/12/20 9:00 PM
    Moderate snowfall. 1/4 – 1/2 mile visibility. Snowfall measurement (6 – 9 PM): 3.6″. Event total: 5.7″
  • 4/12/20 7:45 PM
    Heavy snowfall continues. Visibility between 1/8th – 1/4 mile. Next snowfall measurement at approximately 9 PM.
  • 4/12/20 6:05 PM
    Visibility has dropped to approximately 1/8 mile due to heavy snowfall. 2.1″ measured so far.
  • 4/12/20 5:30 PM
    Snow is beginning to stick to roadways too now. Visibility is just over 1/4 mile.
  • 4/12/20 4:05 PM
    Snow is beginning to stick to grassy areas around our property now. Cement is wet but free of snow.
  • 4/12/20 3:25 PM
    Initial snowfall this afternoon has been melting on contact due to the relatively warm ground, but temperatures have been falling over the past couple hours.
  • 4/12/20 9:00 AM
    Expect the snow to start flying by mid afternoon. Heaviest snowfall after 8 PM. Winds should stay light to moderate until daybreak Monday.  Winds will build after that point reaching a peak in the afternoon. Blizzard-like conditions are likely as it will be snowing all day Monday. As per usual, I will report periodic measurements & observations here throughout the event. Keep checking back.
Category: Live Blog, Snow, Snow Measurements, Storm Report, Weather
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