February 2013 Central Indiana Climate Summary

Central Indiana
February 2013
Climate Summary
66th Coolest on record at Indianapolis
Tied for 71st Driest on record at Indianapolis
Tied for 46th Least Snowiest on record at Indianapolis
 
Temperatures
Temperatures generally ended up within a degree or two either side of average across much of central Indiana as the Ohio Valley experienced alternating periods of warmer and colder weather throughout the month.
February started out cold across central Indiana as the Ohio Valley remained under the influence of a large upper trough. The coldest high and low for the month across much of the region took place on the 1st, with temperatures struggling to climb out of the teens during the day and falling into the single digits that night. The temperatures began a slow climb back to near, then above average by the 7th as highs warmed into the 50s. The passage of a weak cold front brought highs back down into the upper 30s and lower 40s on the 8th and 9th, before another warming trend commenced on the 10th with the passage of a warm front. Highs from the 10th through the 14th generally ranged from the middle 40s to lower 50s with an extended period of dry weather.
Colder air returned to central Indiana beginning late on the 14th with the passage of a cold front. Highs fell back into the 30s on the 15th and even down into the 20s on the 16th with scattered flurries and snow showers impacting the region in wake of the frontal passage. The fast progressive upper level pattern persisted, with the upper trough once again shifting east and being replaced by high pressure and an upper ridge which allowed temperatures to quickly recover. With southerly winds bringing warm air into the Ohio Valley on the 18th, highs soared into the 50s and lower 60s across central Indiana, just a day after morning lows had bottomed out in the single digits and lower teens on the morning of the 17th. This warmup was once again short-lived as colder air returned with the passage of a strong cold front on the evening of the 18th. Highs fell back into the 20s and 30s by the 20th, and persisted through the 23rd as a large upper trough developed across the Ohio Valley and Great Lakes. Temperatures warmed slightly for the last five days of the month, but remained generally near to just below average as a large storm system impacted the region with an abundance of clouds along with rain and then snow.
Site
February 2013     Avg Temp
February 2013 Difference from Normal
Highest
Temperature
Lowest Temperature
Indianapolis
30.9
-1.2
60 on 18
5 on 1
Lafayette
29.2
-1.3
54 on 18
3 on 1
Muncie
31.3
+1.6
57 on 18
6 on 1
Terre Haute
32.2
-0.2
59 on 7
7 on 1
Bloomington
32.2
-0.9
61 on 7
5 on 1
Shelbyville
32.7
+1.0
60 on 18
6 on 1
Indy – Eagle Crk.
30.6
-1.4
58 on 18
5 on 1
 
At Indianapolis, there were 12 days with above normal average temperatures, 14 days with below normal average temperatures and 2 days with average temperatures.
 
February 2013 was the 66th coolest in the Indianapolis area since weather records began in 1871.
 
 
 
Precipitation

Precipitation in February was near normal for much of the state. Portions of western Indiana were wetter than normal while areas of eastern Indiana were on the dry side. Melted precipitation totals ranged from slightly less than 1.5 inches in east central Indiana to more than 3.5 inches in portions of western Indiana. 
The only significant rainfall event of February occurred on the 26th when central and southern Indiana received one-half to nearly two inches of rain.
Lowland river flooding that began in late January ended by the 6th in southwest Indiana. Lowland river flooding returned at the end of February following rainfall on the 26th.   Flooding along portions of the White and Wabash Rivers in western and southwestern Indiana continued into early March.
Site
February 2013  Precipitation
February 2013 Difference from Normal
Wettest Day
Longest Dry Stretch
Indianapolis
2.27
 -0.05
1.26 on 26
 4 days 11-14
Lafayette
2.28
 +0.52
1.32 on 26
 4 days 11-14
Muncie
1.52
 -0.79
0.82 on 26
 3 days 12-14 and 23-25
Terre Haute
2.08*
 +0.15
1.08 on 26
 3 days 12-14 and 23-25
Bloomington
2.55
 -0.21
1.17 on 26
 4 days 11-14
Shelbyville
1.32
 -1.04
0.60 on 26
 3 days 12-14 and 23-25
Indy – Eagle Crk.
2.27
 +0.14
1.25 on 26
 4 days 11-14
                            
February 2013 was tied for the 71st driest in the Indianapolis area since weather records began in 1871.
* February 22 precipitation data missing at Terre Haute.
 
 
 

Snowfall

Wintry precipitation in the state ranged from slightly over an inch in southwest Indiana to more than 24 inches near Lake Michigan in northern Indiana. Most of central Indiana received less than 3 inches during the month. Much of central Indiana areas received one-half of an inch or more of sleet during the evening of the 21st.
 
Severe Weather
There was no severe weather across central Indiana during the month of February.
 
For information on severe weather in other areas during February, visit the Storm Prediction Center “Severe Weather Event Summaries” website at http://www.spc.noaa.gov/climo/online/.
 
Miscellaneous
The maximum wind gust at the Indianapolis International Airport was 59 mph from the southwest on the early morning of the 19th as strong low pressure moved across the region. Fog or haze was reported at Indianapolis on 22 days during the month, with dense fog occurring on one day, the 22nd. Freezing rain occurred on the evening of the 21st and through the morning of the 22nd. Ice pellets also fell during the evening of the 21st.   
 
 
March 2013 Outlook
 
The official outlook for March 2013 from the Climate Prediction Center indicates an equal chance for above, below, or normal temperatures across central Indiana.  At Indianapolis, the average temperature for the month is 42.2 degrees. The outlook also calls for a greater chance of above normal precipitation. The average precipitation for March at Indianapolis is 3.56”, with 2.6” of snowfall.
  
 
Data prepared by the Indianapolis Forecast Office.


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