Climate and Hydrology Highlights Oct. 2009

Tulsa: October 2009 tied with 1925 as the coldest October on record (since 1905). The average temperature was 55.9 deg F, which was 6.7 deg F below normal. This was also the 21st wettest October (since 1888) with 6.14 inches of rain. Click here for more details.

Tulsa only had 9 heating degree days this October. The only other time since 1905 there were single digit heating degrees days in October was in 1906, which also had 9 HDDs.

Tulsa's Annual Normal Rainfall is 42.42 inches. From Jan. 1 - Oct. 31, 2009, Tulsa has already received 43.66 inches of rain.

October 2009 ranked as the 3rd wettest October in Fort Smith and the 7th coldest October (since 1882). Click here for more details.

Fort Smith's Annual Normal Rainfall is 43.87 inches. From Jan. 1 - Oct. 31, 2009, Fort Smith has already received 52.00 inches of rain.

Several record low maximum temperatures were set this month at TUL, FSM, FYV, and MLC. FYV and MLC both tied record minimum temperatures on the 18th.

There were 13 floods at 10 forecast points this month. Ater the heavy rain event on Oct. 8-9, 9 of the 31 forecast points in the HSA exceeded flood stage, with 6 reaching moderate flooding.

An El Nino Advisory is in affect. El Nino is now moderate intensity and is still expected to remain at least a moderate event later this fall and winter. Click here for the Winter Outlook.