Texas 100°+ Heat Continues Record Rampage at Dallas, Waco

Image (click to enlarge): Forecast vs. record temperatures for Aug. 1-7 at Dallas and Waco, from National Weather Service

See Record Heat for the latest updates.

11 PM CDT Update: The highs of 107° at Dallas and Waco both set new daily records.

4 PM CDT Update: The 106° at 4 pm has at least tied the record for the date at Dallas. The record is also tied with the same reading at Waco.

Original post:
It's generally not considered good forecasting practice to predict record temperatures, but 100°+ temperatures continuing into the first week of August make it likely that at least 4 of the next 7 days will tie or break high temperature records at Dallas and Waco. The 31 consecutive days of 100° temperatures which began July 2 at Dallas are now the second longest streak in history, behind Jun 23 - Aug 3, 1980. The 33 days at Waco are also in second place. The total of 38 days so far this year are tied for 9th place at Dallas. The 50 days at Waco are tied for 7th, but are only 2 away from 5th place.

Here are the top 10 streaks and annual totals for Dallas:

Rank    # of Days   Dates
1       42          Jun 23 - Aug 3, 1980
2       31          July 2-Aug 1, 2011 
3       29          Jul 6 - Aug 3, 1998
4       25          Aug 2-26, 1952
5       24          Jul 28 - Aug 20, 1999
6       20          Jul 9-28, 1954
7       19          Aug 8-26, 2006
8 (tie) 18          Jul 31 - Aug 17, 2010
        18          Jul 2-19, 1978
10      17          Aug 2-18, 1956  

Rank    # of Days   Year
1       69          1980
2       56          1998
3       52          1954
4       48          1956
5       46          2000
6       44          1952
7       43          2006
8       40          1951
9 (tie) 38          2011
        38          1963  

Here are the top 10 streaks and annual totals for Waco:

Rank    # of Days   Dates
1       42          Jun 23 - Aug 3, 1980
2       33          Jun 30 - Aug 1, 2011 
3       30          Jun 27 - Jul 26, 1969
4       29          Jul 6 - Aug 3, 1998
5       26          Jul 29 - Aug 23, 1987
6       25          Jul 31 - Aug 24, 2010
7       24          Jul 22 - Aug 14, 1910
8       23          Aug 3-25, 1952
9 (tie) 20          Aug 8-27, 2006
        20          Jul 2-21, 1978

Rank    # of Days   Year
1       63          1980
2       61          1998
3       58          1969
4       55          2009
5 (tie) 52          1990
        52          1977
7(tie)  50          2011 
        50          1925
9(tie)  46          1978
        46          2006