Saturday, November 24, 2012

Cooler Air Invades Again

Good Saturday Morning! I hope you all enjoyed the nice mild warm up over the past week. It took a while but we managed to go from a high of 40° on Tuesday the 13th and climb to a high of 63° on Thanksgiving Day. The mild thanksgiving was actually one of the warmest ones we've had in 31 years but no where close to the warmest one ever held for 112 years. This is when 74° was recorded back in 1900. The 10 day average temperature for this time period should be 51° but the actual average temperature ended up being 58°, which was 7° above normal.
Here's a breakdown of the daily temperature departures:

11/13: -14° from normal 54.
11/14: -13° from normal 53.
11/15: -7° from normal 53.
11/16: -1° from normal 52.
11/17: +3° from normal 52.
11/18: +7° from normal 51.
11/19: +7° from normal 51.
11/20: +7° from normal 50.
11/21: +12° from normal 49.
11/22: +14° from normal 49.
11/23: +5° from normal 48.

We did have a very potent cold front that passed yesterday which kept temperatures down into the 30s but before so, we were able to record a high of 53° at 3:27AM. Temperatures tanked fast. We went down to 36° before 8AM. So thats pretty much a 17 degree drop within 4 hours. Temperatures remained fairly steady between 37°-39° for most of day.


As a very cold air mass settles in we were able to drop to a low temperature reading this morning of 25°. Our first sub 40 temperature of the season will likely occur today. The last time we failed to reach 40s for the high was way back on March 3rd. So this will be the coldest day of the season and coldest in 9 months. As the NAO/AO tank into the negative, and Greenland Block returns. This means we are only in for more chilly days ahead and maybe even a more stormier pattern too. Its been a fairly quiet month in terms of precipitation and snowfall. More details later on.
You can see lots of sunshine for this afternoon, but again, not helping the temperatures out. Also, the winds will calm down a little. Yesterday, winds topped speed up to 36mph with gust as high as 46mph. Today, winds should blow 5-10mph with gusts no more than 15mph, if that. Winds will pick back up again tomorrow.
Tonight and into the overnight hours, high clouds will stream in. This is a sign that warmer air will be coming in. Don't be fooled though because if your expecting a BIG warm up its not going to happen. In fact, there is no more 60s, or 70s coming (in the foreseeable future) and we won't see too many 50° days either over the next 7-10 days. Our highs Sunday and Monday will only warm up into the mid 40s. Another system next week looks to come in on Monday and bring some rain chances. This could likely change over to some wet snowflakes Tuesday morning. It showed up as a massive storm system over the past few weeks but now has dramatically weakened. Could have been a big snow event but latest computer models runs aren't showing that anymore. Right now, there's still some uncertainty as to where this will exactly set up at. At the most, Indiana could get an inch of snow in some spots if we're lucky. That's about it. I'm expecting most to get less than that. For Indianapolis, we could squeeze maybe a quarter of an inch or less. Not set in stone though just yet. I will update on further developments later on. It should be a lot more clearer as to what will go on by the end of the weekend but I will tell you this, some areas of the state will see very little snow and some will see just a little more closer to the inch mark. Again, location is still impossible to pinpoint at the moment. Standby and be patient snow lovers.


Meteorological Fall(SEPTEMBER-OCTOBER-NOVEMBER)
Only one week left of meteorological fall and its been a chilly one. We've had some of our coldest days since March this month. Out of the past 84 days, since September 1st, 51 days have been below normal, 32 days have been above normal, and 1 day was normal. Nearly 61% of the seasons days has been below normal.
HIGHS
So far we've had 8 days with highs in the 80s, 22 days in the 70s, 23 days in the 60s, 21 days in the 50s, 10 days in the 40s.
Our last 80° day was on September 13th (81°)
Our last 70° day was on November 10th (72°)
Our last 60° day was on November 22nd (63°)
Our first 60° day was on September 18th (66°)
Our first 50° day was on October 6th (53°)
Our last 50° day was on November 23rd (53°)
Our first 40° day was on October 30th (42°)
Our last 40° day was on November 15th (46°)
The highest high temperature is 88° (September 4th) and the lowest high temperature is 40° (November 13th).
The average high for the season is 63°. This is running nearly 3° below normal.
LOWS
So we've had 4 days with lows in the 70s, 5 days in the 60s, 25 days in the 50s, 16 days in the 40s, 23 days in the 30s, and 11 days in the 20s.
Our last 70° low was on September 4th (72°)
Our last 60° low was on September 26th (63°)
Our last 50° low was on November 11th (53°)
Our first 40° low was on September 18th (48°)
Our last 40° low was on November 20th (46°)
Our first 30° low was on September 23rd (39°)
Our last 30° low was on November 22nf (37°)
Our first 20° low was on November 1st (29°)
Our last 20° low was on November 23rd (28°)
The lowest low temperature is 25° (November 5th & 13th) and the highest low temperature is 75 ° (September 1st).
The average low for the season is 44.2°. This is nearly 2° below normal.
We picked up 12.93" of rain since September 1st, which is 3.84" above normal. Also, we've picked up 0.20" of snow. The normal value in the fall months is 1.10". Currently, we are running 0.60" below normal for the season. We average 0.30" of snow for the remaining days of November.

November 2012
Quick Recap. Here's a look at the weather observations this month.
High/Low/Rainfall/Snowfall
November 1st-54/29/None/None<-----First day w/ low temp in 20s since April 11th.
November 2nd-51/33/None/None
November 3rd-41/33/0.08"/Trace
November 4th-45/30/None/None
November 5th-46/25/None/None<-----Coldest Morning Since March 4th.
November 6th-49/28/0.01"/None
November 7th-50/35/0.07"/None
November 8th-48/27/None/None
November 9th-63/32/None/None
November 10th-72/47/None/None<----Warmest day of Month since October 25th.
November 11th-67/53/0.01"/None
November 12th-57/29/0.90"/0.20"<-----First measurable snowfall since March 5th.
November 13th-40/25/None/None<----Coolest Day since March 4th.
November 14th-41/27/None/None
November 15th-46/27/None/None
November 16th-51/26/None/None
November 17th-55/28/None/None
November 18th-58/32/None/None
November 19th-58/37/Trace/None
November 20th-57/46/0.01/None
November 21st-61/37/NONE/None
November 22nd-63/37/0.02/None<-----Warmest Thanksgiving since 1981.
November 23rd-53/28/0.23/None
Nov. Summary-1226/751/1.33"/0.20"
Avg High-53.3° Avg Low-32.7° Avg Monthly temp 43° Month is running 2.3° below normal.
The current month to date (total) precipitation of 1.33" is 1.52" below normal.
The current month to date (total) snowfall of 0.20" is 0.60" below normal.
14 out of 23 (61%) days this month have been below normal.
For the second half of the month the average high decreases from 52° on the 16th to 45° on the 30th. The average low decreases from 35° on the 16th to 29° on the 30th.
Also, so far we've lost between 40-45 mins of daylight so far this month, we'll lose about another 10-15 mins by months end. Daylight hours will continue to decrease until the winter solstice. We don't lose any daylight on December 21st and then we slowly began to start gaining daylight back starting on December 22nd.

Weekly Drought Analysis



Last blog, I went into depth and took a look back at how our precipitation measures up for the year. This weeks latest drought analysis showed very little change from last week. In fact, it worsened just a tad. Last week 42% of the state was abnormally dry. This week 43% of the state is abnormally dry. We only picked up 0.26" of rain within the past week putting our months total at 1.33". This is 1.52" below the normal 2.85" we should have now. For the year, we now sit at 35.42". This keeps the years rainfall deficit at 3" below normal. It's much worse in other spots around the state. Here's how the rest of the state measures up:

Location Year to Date Precipitation
(through Nov. 24)
Departure from Average Precip since Sept 1 Departure from Average Precip since Nov 1 Departure from Average
Indianapolis 35.42 -  3.00 12.93 +3.84 1.33 -1.52
Evansville 29.57 -  10.93 11.60 +2.02 1.10 -2.18
Lafayette 27.70 -  5.66 10.29 +2.48 0.80 -1.46
Terre Haute 25.14 -16.07 7.60 -2.33 0.52 -2.42
Muncie 30.57 -  5.88 11.65 +3.11 0.92 -1.74
Bloomington 28.83 -14.30 12.53 +2.59 1.36 -1.70
Shelbyville 25.70 -13.73 8.98 -0.17 0.62 -2.25
Ft. Wayne 26.37 -  8.45 7.51 -0.47 0.59 -1.75
South Bend 31.26 -  3.38 6.68 -2.69 0.26 -2.26
Indy - Eagle Creek 35.18 -  1.70 13.05 +4.82 1.34 -1.53
NOTE: Precipitation not available on some days since January 1 in Lafeyette, Terre Haute, and Bloomington.


The dry pattern has had its toll this month and we'll likely finish with below normal precipitation. By the way, since the summer, all but one county has either lifted their burn ban or one never implemented one. To this day, Martin County is the only county that still remains under a burn ban. Martin County is located in parts of Loogootee, Indiana. This is southwest of Bedford and northeast of Evansville.
This is the 2nd driest month so far in the past 10 years and driest since 2009 in Indianapolis. However, since we picked up 0.26" since my last blog this now bumps us out of the list as being one of the top 10 driest Novembers on Record. The average precipitation during the month of November is 3.70". Six out of the past 10 Novembers have finished with below normal precipitation.

2011-4.87"
2010-4.46"
2009-1.16"
2008-1.97"
2007-1.85"
2006-4.25"
2005-3.64"
2004-5.11"
2003-3.65"
2002-2.88"


FULL MOON
The full moon comes out on Wednesday, November 28th. This is known as the "Full Beaver Moon" or "Frost Moon". This is the time for hunters to set out traps before the water freezes over. Since this is the time of the year beavers are out gathering up their supply and preparing for the winter, hunter's utilize this time to hunt for the beavers to ensure they have fur to keep them warm for the cold season ahead.
Next month's moon comes out on Friday, December 28th. This is called the "Full Cold Moon".


UPCOMING....
Latest European Weeklies suggest that temperatures will be below normal to near normal for much of the Eastern Half of the nation during the month of December. Could see a few very brief periods of mild weather mixed in here and there but nothing significant to jump for joy about. If things pans out right, we start to see some storms spinning up as well. Right now, I am going with near normal temperatures and precipitation and below normal to near normal snowfall next month. I will note, if, and thats a big "IF" these storms do stir up we could be leaning more towards normal to above normal snowfall but I am not counting on that at the moment. During the month of December the average high decreases from 44° on the 1st to 36&3176; on the 31st, while the average low decreases from 29° on the 1st to 21° on the 31st. We average 3.17" of rain or frozen precipitation and the average snowfall is 6.90". We'll continue to update on latest developments. Standby for more blogs to come.

***7 Day Forecast***


NOV. 24 NOV. 25 NOV. 26 NOV. 27 NOV. 28 NOV. 29 NOV. 30
SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY
PARTLY
SUNNY
PARTLY
SUNNY
PM
SHOWERS
PARTLY
SUNNY
SUNNY PARTLY
SUNNY
PARTLY
SUNNY
COLD BREEZY AM WINTRY MIX
37 44 44 38 42 43 45
27 28 28 25 27 30 33

No comments:

Post a Comment