According to the NOAA dictionary, an unsettled weather pattern is a condition in the atmosphere conducive to precipitation. This term is typically associated with the passage of surface or upper-level low-pressure systems, fronts, or other phenomena when precipitation is expected.
Today will see mostly cloudy skies with perhaps a few sprinkles around the area. Seasonable temperatures are expected much of the week, with some rain shower chances centered on Tuesday and Wednesday, more so in southern portions of the state.
Grand Rapids Forecast
9 25 grrU.S.A and Global Events for September 25th:
1848: The Great Gale of 1848 was the most severe hurricane to affect Tampa Bay, Florida and is one of two major hurricanes to make landfall in the area. This storm produced the highest storm tide ever experienced in Tampa Bay when the water rose 15 feet in six to eight hours.
1942: From September 24th through the 26th, 1942, an early-season winter storm moved through the Northern Plains, Upper Mississippi River Valley, and Great Lakes, dropping measurable snow as it went. In many places across Minnesota, Iowa, Wisconsin, and northern Illinois, this was their earliest measurable snow on record. Click HERE for more information from the NWS Office in La Crosse, Wisconsin.
1998: Four hurricanes were spinning simultaneously in the Atlantic basin: Georges, Ivan, Jeanne, and Karl. That was the first time this had happened since 1893.
2015: Fairbanks, Alaska received 4–9 inches of snow. Another storm on September 27-30 produced 14.2 inches, including 11.2 inches on the 29th. September 2015 would end up being Fairbanks’s second snowiest September on record with 20.9 inches.
2015: An EF2 tornado tracked nearly seven miles across Johns Island in South Carolina. Click HERE for more information from the NWS Office in Charleston, South Carolina.
2017: A large waterspout was seen over the Ionian Sea, off the coast of Gallipoli, Italy. Click HERE for a tweet from Severe-Weather.EU
Forecast Discussion
Mid-level moisture is on the increase today as weak shortwave troughing arrives in advance of an upper low centered across Minnesota. There could be some isolated showers by this afternoon, but most places will not see measurable precip. Some light QPF is possible tonight as showers encroach from the west, generally a few hundredths of an inch. The upper low moves southeast, bringing deeper moisture and some divergence aloft on Tuesday with rain chances increasing. Falling heights and steeper lapse rates along with marginal instability will allow for isolated thunderstorms as well on Tuesday. The upper low slowly moves across Lower Michigan during the middle of the week with showers and isolated thunderstorms continuing on Wednesday. The low pairs with an upper high across SE Canada to form a rex block, but this is transient as the low weakens and moves east on Thursday to be replaced by longwave ridging by the end of the week. The sensible weather will feature cooler, showery weather being replaced by dry and warmer by the end of the week and next weekend. Precipitation amounts during the Tuesday to Thursday period could be a quarter to half an inch with the heavier amounts expected across the southern half of Lower Michigan.
Bring on the rain and I love all these cool temps! Keep it rocking!
Congrats to Terri on her upcoming retirement. She was the meteorologist I woke up to to watch weather for as long as I can remember. Wishing her the best on the rest of her life plans!
Simply stunning here in the mountains! We’re near Estes Park, yesterday was 100% sun with a high of 73 degrees and this morning it is 33 degrees. Such a huge difference with dew points in the teens compared to upper 50’s and 60’s back home.
Enjoy! I was out there one time about eight years ago. It is truly God’s Country.
Have a nice time.
Slim
Congrats to Terry DeBoer on her upcoming retirement.
Did anyone see the military plane yesterday? I unfortunately did not. Did find out though the Pilot was my friends little brother. Lol. Congrats to him and family and thank you for your military 21 yrs of service!!
Do you know what type of aircraft it was?
Here’s an article…https://wwmt.com/news/local/gobles-high-school-football-alumni-john-highley-united-states-air-force-retirement-michigan#
Thanks. That’s really cool.
Sorry that should be Terri…not Terry autocorrect. I don’t like when my name is spelled wrong. Sorry Terri… Congrats though!!!
Look at those summer temps coming this weekend and beyond!
Yesterday was yet another great late September day with 72% of possible sunshine. There was no rain fall. The official H/L was 75/50 there were 2 HDD’s The highest wind speed was 18MPH out of the E. For today the average H/L is now down to 70/50. The record high of 91 was set in 2017 and the record low of 29 was set in 1947. The record rain fall amount of 3.52” fell in 1961. Last year the H/L was 63/51 and there was 0.44” of rain fall.
Slim