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Re: Weather history miscellany

Posted: Thu Jan 23, 2025 2:31 pm
by Randi
MODIS Image of the day



Cloud Streets and Lake Effect Snow near the Great Lakes(1/21/2025 )

In this type of image, snow and ice appear bright electric blue, deep water looks dark blue, vegetation is green, while open land shows in shades of tan. In addition, clouds usually look white, but high, cold clouds carrying ice crystals often are tinted with electric blue.
The widespread, striking cloud formations are known as “cloud streets,” because lines of cloud line up parallel to each other much like lanes on a busy highway. These rows of cumulus cloud form in winter, when extremely cold air moves over unfrozen, relatively warm water. Under these conditions, columns of warm air begin to rise off the lake surface. Once the warm air reaches the frigid air, moisture condenses to form clouds. The rising air then begins to cool and rolls to either side. As the air sinks, clouds dissipate. The rising and sinking motion creates parallel cylinders of rotating air that line up along the direction of the blowing wind.
Frigid air over open water can also trigger another well-known phenomenon seen in winter along the Great Lakes: lake effect snow. This is heavy snow that falls along the southeastern edge of the Great Lakes when icy wind from Canada sweeps across the lakes. The wind carries the relatively warm, moist air from over the lakes and pushes it over land, where the air is cooler. When the moist air encounters cooler temperatures over land, the water condenses into precipitation, creating a dense band of snow that usually does not travel very far inland. A band of lake effect snow is clearly visible along the eastern shore of Lake Michigan, beginning just as the cloud streets end.


https://www.geonames.org/5007990/saginaw-bay.html

Re: Weather history miscellany

Posted: Fri Jan 24, 2025 1:50 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_24

1967: A tornado outbreak across the Central U.S. was the furthest north ever recorded in the winter up to that time. Severe weather occurred across a good portion of the southeast and east-central Iowa. Two-inch hail fell at Armstrong, and over two dozen tornadoes were reported. Five miles north of Fort Madison, one fatality occurred from a tornado, along with six injuries. A tornado causing F4 damage killed 3 people and injured 216 in St. Louis County, Missouri. Storms also affected parts of northern and central Illinois. One strong tornado in Mason County killed one person and injured three others. Another tornado moved across the Champaign-Urbana metropolitan area, injuring five people. Other strong tornadoes were reported across Carroll County in Mt. Carroll, where 12 people were injured, and near Gladstone in Henderson County. Funnel clouds were reported across the southwest section of Chicago, IL. Iowa had never recorded a tornado in January before this outbreak. 32 total tornadoes occurred, 14 of them in Iowa. Nine twisters occurred in Missouri, 8 in Illinois, and 1 in Wisconsin. Click HERE for more information from the NWS Office in Davenport, Iowa.

Re: Weather history miscellany

Posted: Fri Jan 24, 2025 2:00 pm
by Randi
NASA Earth Observatory



Southern States Frozen Over(January 22, 2025)

Temperatures plunged into the single digits in southern Texas and Louisiana on January 22, when an arctic airmass met with a low-pressure system over the Gulf Coast. The airport in Baton Rouge recorded a temperature of 7 degrees Fahrenheit (minus 14 degrees Celsius), the lowest measured there in 95 years of record keeping.
Bands of winter weather brought blizzard conditions to southwestern Louisiana, a region unaccustomed to snow and ice. Wind gusts of 30 to 40 miles per hour accompanied the heavy snow and led to limited visibility. Several cities saw all-time records for snow totals on January 22, including New Orleans, Louisiana; Mobile, Alabama; and Pensacola, Florida. About 8 inches of snow fell in New Orleans and 5 inches in Pensacola.
The rare storm brought more snow to New Orleans than has fallen in Anchorage, Alaska, since the start of meteorological winter, noted the National Weather Service.



Re: Weather history miscellany

Posted: Sat Jan 25, 2025 4:22 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_25

1821: The Hudson River was frozen solid amid the coldest winter in forty-one years. Thousands of persons crossed the ice from New York City to New Jersey, and refreshment taverns were set up in the middle of the river to warm pedestrians.

1937: Las Vegas, Nevada dropped to 8 degrees above zero, setting a record low for the city.


1949: Las Vegas, Nevada, recorded 4.7 inches of snow. This brought the monthly snowfall total to 16.7 inches which still ranks as their snowiest month on record.

Re: Weather history miscellany

Posted: Sat Jan 25, 2025 4:35 pm
by Randi
NASA Earth Observatory - 2015





The Electric Eye of Cyclone Bansi(January 12, 2015)

Bansi formed in the southwestern Indian Ocean on January 11, 2015. By the time this photo was taken on the following day, Bansi had achieved tropical cyclone strength, with sustained maximum winds over 185 kilometers (115 miles) per hour. The cyclone would reach category 4 strength before becoming a weak extra-tropical system on January 19.
The dim swirl of the cloud bands covers the ocean surface in both night images. The eye of the cyclone is brilliantly lit by lightning in or near the eye wall. The low-light settings of the camera used to take the image accentuate the contrast.



Re: Weather history miscellany

Posted: Sun Jan 26, 2025 1:44 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_26

1937: The wettest month ever in Cincinnati, Ohio, is January 1937, when 13.68 inches fell. Their average January amount is 3.00 inches of precipitation. The overabundance of precipitation over the Ohio River basin caused near-record to record flooding in Ohio, Indiana, Illinois, and Kentucky. On this day, the river gauge reached 80 feet in Cincinnati, the highest level in the city's history. The Ohio River reached 57 feet in Louisville, Kentucky, on the 27th, setting a new record by ten feet. Seventy percent of the city was underwater at that time. The NWS Office in Louisville, Kentucky, has an informative webpage on this event.

Re: Weather history miscellany

Posted: Mon Jan 27, 2025 3:05 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_27

1989: Bitter cold air gripped most of Alaska during January 1989. Tanana, near Fairbanks, saw a low temperature of 76 degrees below zero on this day. The high for the day was 60 degrees below zero. With an average temperature of 68 degrees below zero, Tanana saw an average temperature of nearly sixty degrees below normal. McGrath, Alaska, recorded a wind chill of -100°F. This is the lowest wind chill ever observed in the U.S. at a populated location. You can read more about this event from the Alaska Dispatch News by clicking HERE.

https://www.geonames.org/5868547/mcgrath.html
https://www.geonames.org/5875808/tanana.html

Re: Weather history miscellany

Posted: Mon Jan 27, 2025 3:45 pm
by Randi
NASA Earth Observatory



Fire in Baja California(January 23, 2024)

Mexico’s National Forestry Commission reported that the fire began on January 22 and had burned nearly 11,000 hectares (27,000 acres) by January 24. According to Baja California’s Civil Protection Office, winds exceeded 80 kilometers (50 miles) per hour as the fire burned. The region is also experiencing extreme drought conditions, according to the National Integrated Drought Information System.
Forecasters expect the region to get some relief soon. They predict that winds should ease in the coming days and a developing storm will likely bring rain.


https://www.geonames.org/4006702/ensenada.html

Re: Weather history miscellany

Posted: Tue Jan 28, 2025 3:21 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_28

1887: Snowflakes "as large as milk pans" fell at Fort Keogh of Montana. The flakes, which were said to measure 15 inches across and 8 inches thick, hold the unofficial size record!

Feb 15, 1887 – 1 · St. Albans Daily Messenger (Saint Albans, Vermont) · Newspapers.com

1969: Heavy rains of tropical origin that began on 1/18 ended on this day. As much as 50 inches of rain fell at 7,700 feet. 31 inches of rain fell on the south slopes of Mt. San Gorgonio, 15.5 inches at San Jacinto Peak, around ten inches at Banning, less than one inch from Indio southeast. 91 were reported dead from flooding and mudslides all over California and state-wide.

The image above is from a tweet by the NWS Office in San Diego, California.

1977: The Blizzard of '77 was one of the worst winter storms to hit southern Ontario and upstate New York. With the rapid onset of the storm, about 2,000 students in the Niagara region were stranded overnight in schools. Click HERE for more information from Gray Roots and Museum.

Re: Weather history miscellany

Posted: Wed Jan 29, 2025 2:35 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_29

1921: A small but intense windstorm resulted in the "Great Olympic Blowdown" in the Pacific Northwest. Hurricane-force winds funneled along the mountains downed vast expanses of Douglas fir trees, and the storm destroyed eight billion board feet of timber. Winds at North Head, WA, gusted to 113 mph. On January 31, 1921, the International News Services reported from Aberdeen, Washington, "It is reported that thousands of dollars in damage was done to buildings and storms in Aberdeen and Hoquiam. The wind velocity was estimated at from 125 to 150 miles an hour. Four steel smokestacks reaching almost 200 feet into the air were the first to collapse before the terrific onslaught of the gale. The giant chimneys crashed down on dwellings crushing them like houses of cardboard." Click HERE for more information from the Office of the Washington State Climatologist.

1947: On this date through the 30th, a fierce winter storm buried southern Wisconsin under two feet of snow. Strong northeasterly winds piled drifts up to 10 feet high in the Milwaukee area, shutting down the city for two days.


Re: Weather history miscellany

Posted: Wed Jan 29, 2025 2:54 pm
by Randi

Re: Weather history miscellany

Posted: Thu Jan 30, 2025 3:44 pm
by Randi
https://www.weather.gov/abr/This_Day_in ... ory_Jan_30

1607: The Bristol Channel floods in England resulted in the drowning of many people and the destruction of a large amount of farmland and livestock. Recent research has suggested that the cause may have been a tsunami [not according to the two articles below]. Cardiff was one of the most badly affected towns, with the foundations of St. Mary's Church destroyed.

1607 Bristol Channel Floods: 400-Year Retrospective
The great flood of 1607

Re: Weather history miscellany

Posted: Thu Jan 30, 2025 3:52 pm
by Randi
NASA Earth Observatory - January Puzzler



Every month on Earth Matters, we offer a puzzling satellite image. The January 2025 puzzler is shown above. Your
challenge is to use the comments section to tell us where it is, what we are looking at, and why it is interesting.
Reply here.