DR. BOB'S WEATHER QUESTIONS
You may send Dr. Bob a weather question regarding particular terms, definitions or any other general weather related questions.
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See below to read the questions and responses.
About 20 years ago, the "northern lights" were visible in this area for one or two evenings. I know you will remember the exact date and would you again explain what
occurred for this to be visible so far south.
and well northward up the Plains; it was just prior to the Vernal Equinox,
and the Northern Hemisphere was still pointing away from the sun; there
was a maxima of solar activity, which increased the number of ionized
particles in the atmosphere.
We, thus, got to see something which comes along once every
half-century or so this far south--the Northern Lights.
RKP
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BackWhen you say "moderate to fresh" winds--what does that mean?
Dr. Bob , has it ever snowed on Christmas Eve or day in Tyler?
Snow--none; sleet--yes, in 1975 and 1991 there was snow on the ground in
Tyler, in 1929 (from a December 21 snow), and in 1963 (from a December 22
snow.) I don't think we'll be numbering 2007 among the above list.
RKP
What is both the meaning and origin of the "Red Flag Warning" I saw in the forecast today?
while coming to. The idea of "warning" suggests an existing weather
condition directly threatening life and property. A tornado warning means
there is one--and you'd better do something.
I'm looking for a scale that describes the terminology used with wind velocity ranging from 1 mph to 35 mph. Light,moderate strong, etc..
You are looking for the Beaufort scale, which can be found at Wikipedia. Use the link below to view that article.
RKP
Beaufort Scale
Why is it windy the day after it rains?
upper air low pressure area.) High pressure builds in behind the departing
low. Air moving from the high into the low causes the winds. The deeper
the low, the stronger the wind. RKP
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