November 2011 Climate Summary

Central Indiana
November 2011
Climate Summary
 
6th Warmest on record at Indianapolis
24th Wettest on record at Indianapolis
Temperatures
November was characterized by a very active weather pattern with storm systems and associated frontal boundaries frequently influencing the region. There were nearly four periods of temperatures significantly warmer than normal by at least 10 degrees. These were pretty well spaced out during the month. Two of these periods were about 20 degrees above normal! Near the 14th, much of the area experienced highs in the low 70s and lows in the mid 50s, and highs near the 26th managed to get back up to the 60s.   While the majority of the month was abnormally warm, there were only a few notable brief periods of abnormally cool temperatures. The first of which occurred on the 10th and 11th, as much colder air was drawn into the area behind a strong low pressure system tracking north of the Great Lakes. Much of the area experienced highs only making it to the 40s and average temperatures approaching nearly 10 degrees below normal. The 17th was also nearly 10 degrees below normal due to the passage of a cold front. 
Site
November 2011 Avg Temp
November 2011 Difference from Normal
Highest
Temperature
Lowest Temperature
Indianapolis
48.7
 +5.1
71 on 8 and 14
27 on 11 and 18
Lafayette
47.9
 +5.1
72 on 14
27 on 17, 18 and 30
Muncie
46.7
 +4.1
70 on 14
26 on 5 and 30
Terre Haute
48.1
 +4.8
72 on 14
23 on 30
Bloomington
48.7
 +4.9
72 on 8 and 14
25 on 30
Shelbyville
48.6
 +4.9
72 on 8 and 14
26 on 11
Indy – Eagle Crk.
46.8
 +2.8
70 on 14
24 on 30
 

At Indianapolis, there were 6 days with below normal average temperatures, 22 days with above normal average temperatures and 2 days with normal average temperatures.

 

 

 

November 2011 was the 6th warmest in the Indianapolis area since 1871.

 
Precipitation

November monthly precipitation was above normal for all of Indiana except the northwestern portion. Melted precipitation ranged 2 inches to nearly 10 inches in Indiana. Much of central and southern Indiana received monthly amounts of 5 to 8 inches. The least amount of rain during November fell in northwest Indiana near Lake Michigan and the most in southwest and south central Indiana.
A large portion of November’s precipitation fell during the last week of the month. Melted precipitation totals of 2 to nearly 5 inches caused widespread lowland flooding. This was the first river flooding since June.
 
Site
November 2011 Precipitation
November 2011 Difference from Normal
Wettest Day
Longest Dry Stretch
Indianapolis
4.87
+1.17
0.98” on 29
3 days 4-6
Lafayette
5.61
+2.64
1.75” on 29
4 days 15-18
Muncie
6.42
+2.97
1.94” on 14
4 days 15-18
Terre Haute
6.12
+2.28
1.10” on 14
4 days 15-18
Bloomington
3.58*
-0.36
0.79” on 14
3 days 4-6, 11-13 and 23-25
Shelbyville
5.96
+2.23
1.02” on 29
3 days 23-25
Indy – Eagle Crk.
4.09
+0.39
0.80” on 29
3 days 4-6 and 23-25
                   

* Total at Bloomington is likely too low and estimates suggest it should be between 6.00 and 7.00 inches.

       
November 2011 was the 24th wettest in the Indianapolis area since 1871.
 
Snowfall
 
Many locations in central Indiana saw their first snowflakes of the season during the afternoon and evening of the 10th as scattered snow showers mixed with ice pellets moved across central Indiana on the back side of a departing storm system. Some locations across central Indiana received a brief dusting of snowfall, but up to 3 inches fell in portions of northeast Indiana. A much more extensive snowfall impacted the region on the 29th as cold air was pulled south into central Indiana as a strong upper low tracked through the Ohio Valley. Locally heavy snowfall developed during the afternoon and evening across northern portions of central Indiana with many locations from Lafayette east through Kokomo and Muncie receiving 3 to 5 inches of heavy wet snow. Snowfall amounts dropped off drastically further to the south where surface temperatures remained just a bit warmer. Many areas from Interstate 70 south received around an inch with locally higher amounts of 2 to 3 inches east of Indianapolis across Henry and Shelby Counties.  Once again the heaviest snow across the state was in northeast Indiana where totals approached 10 inches.
 
Severe Weather
 
Severe thunderstorms impacted central Indiana on the afternoon and evening of the 14th as low pressure tracked along a cold front moving through the Ohio Valley. There was a funnel cloud sighted near the Lafayette Mall from an intense thunderstorm. Additionally, golf ball sized hail was reported in Bicknell in Knox County and in Frankfort in Clinton County. Wind gusts up to 60 to 65 mph were recorded near Lafayette and Terre Haute with numerous trees downed. A semi trailer and large propane tank were overturned along with some minor damage to structures near Danville in Hendricks County.
  
For information on previous severe weather events, visit the Storm Prediction Center “Severe Weather Event Summaries” website at http://www.spc.noaa.gov/climo/online/.
 
Miscellaneous
 
The maximum wind gust at Indianapolis International Airport was 48 mph out of the west-southwest on the 13th as scattered showers and a few thunderstorms moved through the Indianapolis metro area. Fog or haze was reported at Indianapolis on 17 days during the month. Thunder was reported on the 13th, 14th and 22nd.
 
December 2011 Outlook
 
The official outlook for December 2011 from the Climate Prediction Center indicates equal chances for above, below or near normal temperatures for central Indiana. At Indianapolis, the average temperature for the month is 31.6 degrees. The outlook calls for a greater chance for above normal precipitation. The average precipitation for November at Indianapolis is 3.17” and 6.9” of snowfall.
  
 
Data prepared by the Indianapolis Forecast Office.
 


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