DATASTREME DAILY SUMMARY
Monday, 20 November 2000
This week is Thanksgiving Week recess. This
DataStreme Daily Summary contains the Historical Weather Events
for this date. Current weather data are available on the homepage
as usual. The Week 10 Activity files will remain available through
this week. If you are looking for an alternative description of
daily weather, you could try
http://www.usatoday.com/weather/ wlead.htm
HAZARDOUS HIGHS -- The accompanying Supplemental Information
file is a repeat of last week's file. We usually associate low
air pressure with stormy weather and high pressure with "fair
weather", a somewhat subjective term used to describe pleasant
weather conditions, with no precipitation and few clouds. But
can high pressure deliver "un-fair" weather? For a description
of the types of hazardous weather associated with high pressure
systems, please check Monday's optional Supplemental Information.
HISTORICAL WEATHER EVENTS - 20 November
From the files of the Aviation Weather Center, Kansas City,
MO and Intellicast
- ...1869...A second great windstorm in three days struck Vermont
and New York blowing railroad trains off their tracks. (David
Ludlum)
- ...1900...An unusual tornado outbreak in the Lower Mississippi
Valley resulted in 73 deaths and extensive damage across Arkansas,
Mississippi and Tennessee. Two F4 tornadoes accounted for most
of the deaths. (David Ludlum) (Intellicast)
- ...1914...The high temperature of 28 degrees at Atlanta, GA
was their earliest daily high below the freezing mark. (The Weather
Channel)
- ...1979...A blizzard struck Cheyenne, WY producing a record
19.8 inches of snow in 24 hours, and a record total of 25.6 inches
in forty hours. Strong winds created huge drifts stopping all
transportation. (19th-21st) (The Weather Channel)
- ...1987...Blustery northwest winds created snow squalls in
the Great Lakes Region and the Upper Ohio Valley. Snowfall totals
in Upper Michigan ranged up to 18 inches at Paradise. Lake City,
MI received 9.5 inches of snow in four and a half hours. Up to
a foot of snow blanketed Oswego County in western New York State.
Strong winds produced wind chill readings as cold as 22 degrees
below zero at Duluth, MN. (The National Weather Summary) (Storm
Data)
- ...1988...Thunderstorms developing ahead of a fast moving
cold front produced severe weather in the Upper Ohio Valley and
the Middle Atlantic Coast Region during the afternoon and early
evening. Thunderstorm winds gusted to 69 mph at Kennedy Airport
in New York City, and winds along the cold front itself gusted
to 56 mph at Cincinnati, OH. The same storm produced snow in Kansas,
Missouri and Illinois, with eight inches reported at Rolla, MO.
(The National Weather Summary) (Storm Data)
- ...1989...Low pressure brought thunderstorms and high winds
to the northeastern U.S. This unusual out-of-season severe weather
outbreak had 193 reports of damaging winds with thunderstorms
in New York State, Pennsylvania and New Jersey. Tornadoes touched
down near Seaside Park, NJ and McAlevys Port, PA. Winds with thunderstorms
gusted to 86 mph at Harrisburg, PA and Hammonton, NJ, 92 mph at
Poughkeepsie, NY, and reached 94 mph at Newburgh, NY. High winds
in the Washington, DC area, gusting to 73 mph, resulted in one
death. (Storm Data) (The National Weather Summary)
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URL Address: datastreme/learn/m_sum.html
Prepared by Edward J. Hopkins, Ph.D., email hopkins@meteor.wisc.edu
© Copyright, 2000, The American Meteorological Society.