Librarian Files

First 100 Degree (“Icebreak”) Days in Tucson

The first 100 degree day each year is a special event in Tucson.

Icebreak Days

From 1983-2006, local news station KVOA 4 ran a promotion called the Icebreak Contest. The name refers to "the first day the ice breaks" on the Santa Cruz River. The person who correctly guessed the time that the temperature would first hit 100 degrees that year won prizes. Due to a lack of sponsorship, KVOA ended the contest in 2006. The contest was resurrected in 2011.
 
 
Icebreak Dates & Times
Year Date Time
2014 May 16 3:54 p.m.
2013 June 1 12:22 p.m.
2012 Apr 22 1:51 p.m.
2011 May 27 3:23 p.m.
2010 May 28 2:53 p.m.
2009 May 7 1:53 p.m.
2008 May 19 12:10 p.m.
2007 May 11 1:44 p.m.
2006 May 21 3:24 p.m.
2005 May 20 12:43 p.m.
2004 June 1 2:00 p.m.
2003 May 17 12:48 p.m.
2002 May 13 2:58 p.m.
2001 May 8 12:36 p.m.
2000 May 14 4:58 p.m.
1999 May 28 1:58 p.m.
1998 June 2 1:05 p.m.
1997 May 29 1:49 p.m.
1996 May 11 12:15 p.m.
1995 May 21 2:14 p.m.
1994 May 15 2:19 p.m.
1993 May 11 12:15 p.m.
1992 April 27 12:32 p.m.
1991 May 25 2:13 p.m.
1990 May 23 12:52 p.m.
1989 April 19 3:00 p.m.
1988 May 11 12:01 p.m.
1987 June 2 4:00 p.m.
1986 May 19 1:41 p.m.
1985 June 6 12:59 p.m.
1984 May 9 2:36 p.m.
1983 May 23 2:00 p.m.
 

100 Degree Days

 
Historical records for the first annual 100 degree day from 1895-present are available from the National Weather Service at http://www.wrh.noaa.gov/twc/climate/Tucson100s/Tucson100s_1st100.php. (No times are made available.) This source also includes current data for the average first occurence of 100 degree temperatures, as well as updated earliest and latest occurrence records.                                          

Sources:  

 

"Contests for Everyone" KVOA http://www.kvoa.com/contests/ (Accessed May 29, 2014)

"Ice break 2013 Winners" KVOA http://www.kvoa.com/news/ice-break-2013-winners/ (Accessed May 29, 2014)

“100-day streak ends 2 short of mark.” Arizona Daily Star July 21, 2007. Page B5.   Inside Tucson Business.

"Ice Break Contest canceled due to lack of interest." May 1, 2006. Page 15.  

"National Weather Service - NWS Tucson." National Weather Service - Western Region Headquarters.http://www.wrh.noaa.gov/twc/climate/Tucson100s/Tucson100s_1st100.php (accessed March 23, 2013).   

“Ready or not, here come the 100s". Tucson Citizen. May 7, 2009. Page. 1.  

"The Icebreak Sweepstakes is back! | KVOA.com | Tucson, Arizona Home. http://www.kvoa.com/news/the-icebreak-sweepstakes-is-back-/ (accessed March 23, 2013).

“Tucson hit 100 degrees around noon Monday.” Arizona Daily Star.  May 20, 2008. Page B5.

 
 
 
 

Article tagged with: ice break, 100 degrees, tucson, weather, climate, summer

Last Update: 5-29-2014 1:13pm

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