...April Cold Snap Shatters Records...

The first week of April 2007 will go down as one of the top 20 coldest on record. This was in addition to Easter being the 3rd coldest on record going back to 1888.  This occurred after the 2nd warmest March on record.

To put this years cold snap in perspective, the only other time since 1888 the region experienced  a similar event was in 1940. The year 1940 marked the only other time when a string of 3 or more days with overnight freezing temperatures in April followed an extended period of above normal temperatures (70+ degrees)in March.

In 1940 the period from March 27-April 3 recorded highs above 70 degrees. This was followed by 3 days of freezing temperatures below 32 degrees on April 11-13.



    Top 5 Coldest Easter Sundays
Year Max Min
1940 28 16
1964 49 18
2007 46 20
1937 32 21
1920 43 22
 
During the last 7 days all of Missouri has experienced well below average low temperatures.

24 Hours Lo Temp
24 Hours Lo Temp
24 Hours Lo Temp
24 Hours Lo Temp
24 Hours Lo Temp
24 Hours Lo Temp


To see more information on the last 7 days go to the Midwest Regional Climate Centers Climate Watch Page.


PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
333 AM CDT TUE APR 10 2007

...LATE SEASON ARCTIC OUTBREAK BREAKS NUMEROUS RECORDS ACROSS THE
REGION...

AN UNSEASONABLY COLD AIRMASS FILTERED INTO THE REGION OVER THE PAST
WEEKEND BREAKING RECORD AFTER RECORD ACROSS THE OZARKS AND EXTREME
SOUTHEAST KANSAS...INCLUDING SOME RECORDS THAT WERE OVER 100 YEARS
OLD!

HERE IS A SUMMARY OF ALL THE DAILY RECORDS THAT WERE BROKEN DURING
THE RECENT COLD SNAP...

AT SPRINGFIELD...

04/07: LOW OF 22 BROKE PREVIOUS RECORD LOW OF 25 SET IN 1990.
04/08: LOW OF 20 BROKE PREVIOUS RECORD LOW OF 27 SET IN 1914.

AT JOPLIN...

04/06: HIGH OF 42 BROKE PREVIOUS RECORD COLD HIGH OF 44 SET IN 1982.
04/07: LOW OF 23 BROKE PREVIOUS RECORD LOW OF 29 SET IN 1994.
04/07: HIGH OF 41 BROKE PREVIOUS RECORD COLD HIGH OF 48 SET IN 1982.
04/08: LOW OF 19 BROKE PREVIOUS RECORD LOW OF 30 SET IN 2000.

AT WEST PLAINS...

04/07: LOW OF 21 BROKE PREVIOUS RECORD LOW OF 22 SET IN 1994.
04/08: LOW OF 20 BROKE PREVIOUS RECORD LOW OF 22 SET IN 1994.
04/09: LOW OF 23 BROKE PREVIOUS RECORD LOW OF 25 SET IN 1964.

AT VICHY-ROLLA...

04/06: HIGH OF 36 BROKE PREVIOUS RECORD COLD HIGH OF 39 SET IN 1982.
04/07: LOW OF 21 BROKE PREVIOUS RECORD LOW OF 27 SET IN 1898.
04/07: HIGH OF 37 BROKE PREVIOUS RECORD COLD HIGH OF 38 SET IN 1982.
04/08: LOW OF 18 BROKE PREVIOUS RECORD LOW OF 23 SET IN 1902.
04/09: LOW OF 20 BROKE PREVIOUS RECORD LOW OF 28 SET IN 1899.

IN ADDITION TO THE DAILY RECORDS...JOPLIN ALSO TIED THEIR ALL TIME
RECORD LOW TEMPERATURE FOR THE MONTH OF APRIL WHICH IS 19 DEGREES.
THIS RECORD WAS SET ON THE 8TH...AND HAD PREVIOUSLY BEEN SET ON
04/03/1975 AND BACK ON 04/13/1957.

THIS RECENT COLD SNAP ALSO SET OR NEARLY SET RECORDS FOR THE COLDEST
TEMPERATURES FOR SO LATE IN THE SEASON.

AT VICHY-ROLLA...THE LOW TEMPERATURE OF 18 DEGREES ON APRIL 8TH
ESTABLISHED A NEW RECORD LATEST DATE FOR A TEMPERATURE AT OR BELOW
20 DEGREES...AND ALSO BECAME THE LATEST DATE FOR A TEMPERATURE IN
THE TEENS. THE VERY NEXT DAY ON APRIL 9TH THE LOW TEMPERATURE OF 20
DEGREES BROKE THE RECORD SET THE DAY BEFORE FOR THE LATEST DATE WITH
A TEMPERATURE AT OR BELOW 20 DEGREES. PRIOR TO THIS WEEKEND...THE
LATEST DATE FOR A TEMPERATURE IN THE TEENS AND ALSO FOR A
TEMPERATURE AT OR BELOW 20 DEGREES WAS APRIL 1ST 1899 WHEN THE LOW
TEMPERATURE WAS 17 DEGREES!

AT SPRINGFIELD...JOPLIN...AND WEST PLAINS SUNDAYS LOW TEMPERATURES
BECAME THE SECOND LATEST DATE IN THE SEASON FOR TEMPERATURES AT OR
BELOW 20 DEGREES. THE LATEST DATE ON RECORD FOR A TEMPERATURE AT OR
BELOW 20 IN SPRINGFIELD IS 4/13/1957 WHEN THE LOW WAS 18 DEGREES.
THE LATEST DATE IN JOPLIN IS 4/13/1957 WHEN THE LOW WAS 19. WHILE IN
WEST PLAINS THE LATEST DATE ON RECORD FOR A LOW TEMPERATURE AT OR
BELOW 20 DEGREES IS 4/11/1989 WHEN THE LOW TEMPERATURE WAS 19
DEGREES.

ANOTHER ASPECT OF THIS RECENT COLD SNAP THAT WAS SO UNUSUAL WAS THE
LONGEVITY OF THE RECORD BREAKING TEMPERATURES. AT WEST PLAINS DURING
THIS COLD SPELL THE LOW TEMPERATURES DROPPED TO 25...21...20 AND 23
DEGREES ON THE 6TH...7TH...8TH AND 9TH RESPECTIVELY. WHILE
VICHY-ROLLA ON THE 6TH...7TH...8TH AND 9TH HAD LOW TEMPERATURES OF
25...20...18 AND 20 DEGREES RESPECTIVELY. BOTH STATIONS HAD 4
CONSECUTIVE DAYS WITH LOW TEMPERATURES AT OR BELOW 25 DEGREES. NEVER
BEFORE ON RECORD HAS EITHER STATION SEEN 3 CONSECUTIVE DAYS WITH LOW
TEMPERATURES THIS COLD DURING THE MONTH OF APRIL...LET ALONE 4
CONSECUTIVE DAYS!

AT JOPLIN...THE LOW TEMPERATURE WAS AT OR BELOW 27 DEGREES 3
CONSECUTIVE DAYS (25...23 AND 19 DEGREES ON THE 6TH...7TH AND 8TH
RESPECTIVELY). THIS HAS ONLY OCCURRED IN APRIL ONCE BEFORE...BACK ON
APRIL 3RD...4TH...AND 5TH 1987 WHEN THE LOW TEMPERATURES WERE
24...24...AND 26 DEGREES RESPECTIVELY. THIS PAST WEEKENDS COLD SNAP
FEATURED MUCH COLDER DAYTIME HIGH TEMPERATURES THAN THE COLD SNAP
BACK IN 1987. IN 1987 THE MEAN HIGH TEMPERATURE OVER THE 3 DAY
PERIOD WAS 52.7 DEGREES...WHILE THE MEAN HIGH TEMPERATURE OVER THE 3
DAY PERIOD DURING THIS RECENT COLD SNAP WAS NEARLY 10 DEGREES COLDER
AT 43.7 DEGREES.

SIMILARLY AT SPRINGFIELD...THE LOW TEMPERATURES WERE 26 DEGREES OR
BELOW FOR 3 CONSECUTIVE DAYS (26...22 AND 20 DEGREES ON THE
6TH...7TH AND 8TH RESPECTIVELY). ONLY TWICE BEFORE HAS SPRINGFIELD
SEEN 3 CONSECUTIVE DAYS WITH LOW TEMPERATURES THIS COLD DURING THE
MONTH OF APRIL. THE FIRST TIME WAS BACK ON APRIL 2ND...3RD AND 4TH
1975 WHEN THE LOW TEMPERATURES WERE 24...19 AND 25 DEGREES
RESPECTIVELY. THE SECOND TIME WAS BACK ON APRIL 3RD...4TH AND 5TH IN
1987 WHEN THE LOW TEMPERATURES WERE 23...21 AND 26 RESPECTIVELY.
HIGH TEMPERATURES WERE CONSIDERABLY COOLER DURING THIS YEARS COLD
SNAP WHEN THE MEAN HIGH TEMPERATURE FOR THE THREE DAY PERIOD WAS
42.3 DEGREES...COMPARED TO 52.7 DEGREES IN 1975 AND 52.0 DEGREES
DURING THE 1987 COLD SNAP.

RECORDS AT SPRINGFIELD AND VICHY-ROLLA DATE BACK TO 1888. RECORDS AT
JOPLIN AND WEST PLAINS DATE BACK TO 1948.

$$

IZZI

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