January 2014 Arctic Outbreak (spring, heat, California, Florida)
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^ I strongly disagree. Daily highs and lows should be reported only as the highest and lowest temperatures in a given calendar day. Any other method is improper, incorrect, and should be avoided. The sun is irrelevant -- besides, how else would you report daily highs and lows at polar locations when it's either up 24 hours or dark 24 hours?
they should measure lows and high by sunrise to sunset
that would [artificially] inflate lows during summertime heatwaves. During heatwaves it is not uncommon for the low around sunrise to be in the 80s F yet plummet below that during and/or after a thunderstorm of some sorts.
Since 4am BDR (CT Coast) hasn't gone above 12°F, the Top 10 coldest low max is 13F. That means today would of been a Top 10 coldest day on record for any month.
Unfortunately at midnight it was mid 20s. So it ruins the daily low max record and the charts with highs and lows and it wont even be near the Top 10 coldest on paper.
I think they should take a different approach with records like these, like taking the hourly (or "half-hourly") temperature readings and averaging them together to get a true daily mean.
I don't like how only the high and low temperatures matter, what about the other 90-99% of the day? And it shouldn't just be calendar days, what if I wanted to know the hottest/coldest/wettest/snowiest 24-hour period? Or 30 day period?
Last edited by Infamous92; 01-07-2014 at 02:07 PM..
I think they should take a different approach with records like these, like taking the hourly (or "half-hourly") temperature readings and averaging them together to get a true daily mean.
I don't like how only the high and low temperatures matter, what about the other 90-99% of the day? And it shouldn't just be calendar days, what if I wanted to know the hottest/coldest/wettest/snowiest 24-hour period? Or 30 day period?
The China Meteorological Administration, Korea Meteorological Administration (ROK/South Korea), and Japan Meteorological Agency all use a variation of the method you described. In most months and most locations nationally the monthly daily mean temperature is climatologically cooler than the simple arithmetic mean (for my purposes the "avg") of the MAX and MIN.
Blizzard warning continues for Erie, Genesee, and Wyoming counties.
NY Governor Cuomo has declared state of emergency for western NY.
New York State Thruway (I-90) closed from Rochester to PA state line.
Buffalo Airport closed all day.
No Travel advisory for Buffalo area.
Check out Christmas Day 1980. Temps did not go above 5F/-15C after 6am. All day stayed below it with clear skies and scattered clouds. That day isn't even in the Top 20 coldest days. Midnight was 28 degrees.
Also look at the winds. Now that was a brutal day...but on paper and records we would never know it.
Temps here stayed below 10F/-12C all day. Wind Chill below 0F all day. I love it! Wish it was like this year round. Feels so alive. I don't understand why I don't feel the cold, only my hands. Someone said I had antifreeze for blood. LOL
I went out and left my sweatshirt and gloves at home. Guy at post office asked me where my jacket and gloves were. lol I get that a lot!
Check out Christmas Day 1980. Temps did not go above 5F/-15C after 6am. All day stayed below it with clear skies and scattered clouds. That day isn't even in the Top 20 coldest days. Midnight was 28 degrees.
Also look at the winds. Now that was a brutal day...but on paper and records we would never know it.
I quite agree. I strongly prefer using a morning low/afternoon high method for calculating highs and lows for a given day, since that makes for one "daily cycle", so to speak, as opposed to using a high at midnight which amounts to a holdover from the previous day's cycle. The only time I'd use midnight-to-midnight is when the temperature shows no warming after sunrise or cooling after sunset. Perhaps a second set of "morning low" and "afternoon high" measurements should be recorded and publicized along with the normal minimum/maximum, because it's simply wrong to record a high of one day's cycle as 28F if the morning low was -10F and the afternoon high was like 0F and it happened to be 28F at midnight.
I wonder how big of a role the positive NAO has on the fact that NYC (and the Northeast in general) has been hard pressed to see very cold temps in recent years? Not since the mid 70's has it been in a negative phase, but it seems that in a few years that might be changing
Bastardi posted the 1977 and 1985 Arctic outbreak showing the position of the Polar Vortex.
Last edited by chicagogeorge; 01-07-2014 at 05:36 PM..
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