Past IEM Features tagged: mar

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March Changes

23 Mar 2017 05:36 AM
For Ames, this March we had one stretch of five days with the high temperature only maxing out at 31 degrees. Has this cold of a period become more of less common? The featured chart attempts to answer that question by looking at the distribution of max five day high temperatures comparing the 30 year period before 1987 to the same number of years afterwards. The answer to the question comes with the split violin charts on the left hand side. The later year period shows a shift upward in distribution and a remarkable vacating of the lowest temperature frequencies. The meaning being that the periods of very cold temperatures are less frequent than they have been.

Voting:
Good: 10
Bad: 0

Tags:   mar  

March Dew Points

07 Mar 2017 05:34 AM
Our eventful weather pattern continued on Monday with very warm and moist air for early March fueling thunderstorms that brought damaging winds, hail, and a few brief tornadoes to the state. The featured chart presents average dew points for March partitioned by wind direction. Our winds were out of the S and SSW, which is the favored direction for the highest dew points. Actual readings were well into the 50s, which is plenty higher than climatology shown by the featured chart.

Voting:
Good: 8
Bad: 0
Abstain: 1

Tags:   mar  

April vs March

29 Mar 2016 05:36 AM
March is rapidly coming to a close and will go down as one of the warmer ones on record for Iowa. Does a warm March predict a warm April as well? The featured chart compares the average temperature for March with the following April's average temperature. The trend line is only slightly positive and the data is spread over all quadrants rather equally. The last few days of March look to go out warm before slightly cooler weather is expected to start off April.

Voting:
Good: 10
Bad: 0

Tags:   mar   apr  

Dry March

31 Mar 2015 05:43 AM
The last day of March is at hand and it would appear to be another dry and warm day. The featured chart presents Iowa areal averaged precipitation totals for each March since 1893. Based on preliminary data, this March comes in as one of the driest on record and continues the recent trend of below average totals. Recent Aprils have made up for dry Marches and the forecast has some heavy rainfall arriving Wednesday evening.

Voting:
Good: 17
Bad: 9
Abstain: 7

Tags:   mar  

March Min Date

09 Mar 2015 05:40 AM
So far this month, the 5th of March was the coldest for Ames for minimum High and Low Temperature. The featured chart presents the frequency of which day of March was the coldest for each year back to 1893. The coldest day does not necessarily always happen to start off the month. Our current weather and forecast provides some optimism that the coldest weather of the season is behind us, but there is still plenty of time for more cold and snow!

Voting:
Good: 14
Bad: 9
Abstain: 5

Tags:   mar  


Very cold for March

04 Mar 2014 05:38 AM
Our most recent bout with very cold winter air this season was rather exceptional considering that the calendar is now in March! The featured image shows hourly temperature reports from the Des Moines Airport for Sunday and early Monday along with the last observation that cold for that hour in March. Sunday afternoon was particularly cold as one would have to go back 50-65 years to experience similar temperatures. The good news is that warmer weather is in the forecast and we can only go up from here!

Voting:
Good: 31
Bad: 4
Abstain: 5

Tags:   mar  


Barely warmer than March

23 Apr 2012 05:51 AM
The featured chart compares the average Ames temperature for March with the following April for each year since 1893. For Ames, each April has been warmer than its preceding March. After our record setting March this year, there may have been some doubt if April would be warmer as well. The forecast has temperatures warming back up this week, but cooler weather expected again next weekend.

Voting:
Good: 40
Bad: 6

Tags:   mar   apr  


Humid March

03 Apr 2012 05:53 AM
While this past March was easily the warmest on record, it was not the most humid on record as shown by the featured chart. The top chart presents the average near surface mixing ratio which is the ratio of water to dry air. By this metric, 2012 comes in a close second place to 1998. The bottom chart is the simple maximum reported dew point value for the month. In this case, 2012 ties 1990 at 63 degrees. The near term forecast has us back closer to reality with highs in the 60s and upper 50s.

Voting:
Good: 22
Bad: 6

Tags:   mar12   mar  


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Setting Records in March

21 Mar 2012 05:48 AM
Numerous places over the eastern half of the country set records again on Tuesday as the epic warmth of March rolls on. The temperature was cool enough to not set another record high temperature for Des Moines and so ending the streak of six straight days with a record high. The featured chart attempts to show the daily record high temperatures for Des Moines and the year during which they were sequentially set. Of course, the first year on record shows up for each date with later years slowly building over top them. The records for this year are shown in bright red. The numerous warm days in the year 1910 show up prominently, which may be the only competition for this year to be the warmest March on record. The numeric value shown on the top of each bar indicates the number of times the daily record has been set. Kind of interesting to note the most frequent days with records set having occurred in the recent period as well, which was probably helped by an initially cold period for the first year on record.

Voting:
Good: 27
Bad: 11

Tags:   mar12   mar  


Warmer March in store?

15 Feb 2011 05:55 AM
The past few days of much warmer weather has helped to eliminate much of the snow that has stuck around for most of winter. The featured chart looks at the relationship between having snow on the ground of a given day in February and then the average temperature that following March. The implication is clear, getting rid of the snow now leads to a few more degrees warmer weather in March. The chart also shows that the coldest, on average, March temperatures are when there is snow at the end of February and the warmest are when there is no snow at the beginning of the month.

Voting:
Good: 13
Bad: 6

Tags:   snowcover   feb   mar