I don't know about the dogs 40 degree rule. And I don't know how much colder it is in the area they're searching than it is where the Portland weather stats come from. But I just searched those stats going back to weekend of Sat December 4, 2010. There were several weekends where Portland weather stats showed actual temps well within range for dogs, starting with last weekend (the weekend before David Anthony Durham shot Offcr Dodd):
Sat Jan 22: actual high of 50; low of 35; precip of 0
Sun Jan 23: actual high of 46; low of 35; precip of .01" (too iffy to plan a search)
Sat Jan 15: actual high of 54; low of 50; precip of .86" (can dogs do some rain??)
Sun Jan 16: actual high of 57; low of 55; precip of .68"
Sat & Sun of Jan 8 & 9: highs of 42
Sat & Sun of Jan 1 & 2: highs in mid-30s
Sat & Sun of Dec 25 & 26: highs in mid-40s; lows 39 & 40, but it's Christmas
Sat & Sun of Dec 18 & 19: highs of 43; lows 35 & 33 (too iffy)
Sat Dec 11: actual high of 58; low of 40; precip of 1.3" precip
Sun Dec 12: actual high of 61; low of 54; precip of .13"
Sat Dec 4: actual high of 46; low of 39; no precip
Sun Dec 5: actual high of 48; low of 40; no rain
So, when does the investigative lead date back to? And what is public relations or info being restrictive to protect the case???
Sat Jan 22: actual high of 50; low of 35; precip of 0
Sun Jan 23: actual high of 46; low of 35; precip of .01" (too iffy to plan a search)
Sat Jan 15: actual high of 54; low of 50; precip of .86" (can dogs do some rain??)
Sun Jan 16: actual high of 57; low of 55; precip of .68"
Sat & Sun of Jan 8 & 9: highs of 42
Sat & Sun of Jan 1 & 2: highs in mid-30s
Sat & Sun of Dec 25 & 26: highs in mid-40s; lows 39 & 40, but it's Christmas
Sat & Sun of Dec 18 & 19: highs of 43; lows 35 & 33 (too iffy)
Sat Dec 11: actual high of 58; low of 40; precip of 1.3" precip
Sun Dec 12: actual high of 61; low of 54; precip of .13"
Sat Dec 4: actual high of 46; low of 39; no precip
Sun Dec 5: actual high of 48; low of 40; no rain
So, when does the investigative lead date back to? And what is public relations or info being restrictive to protect the case???