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September 2009

  • 2 rivers exceeded flood stage: Neosho R. near Commerce (twice this month, both moderate flooding) and Verdigris R. near Lenapah (minor flooding)
  • Locations east of I-44 and Hwy 75 received 125% to 300% of the normal September rainfall.  Elsewhere, 25% to 75%. Eastern Kay, western Osage, and western Pawnee Counties had the biggest  deficits receiving 10% to 25% of normal rainfall for September.
  • Spavinaw Coop Observer reported 12.05 inches in Sept. 2009, with reports of over 1 inch of rain on 5 days and over 3 inches on 2 days this month.
  • RVS reported 10.44 inches and MKO reported 10.20 inches this month.
  • TUL: 17th coldest September (since1905) and 13th wettest September (since1888)
  • TUL: Set a daily rainfall record of 4.42" on 9/21/09.  Old record was 3.50" in 1902.
  • FSM: 9th wettest September (tied with 1890) and 36th coldest September (since1882)
  • According to OCS, Southeast OK ranked as the 6th wettest September and the 4th wettest July-September period (since 1921).  From Jan. 1-Sept 30, Southeast OK ranked 11th wettest; East Central OK ranked 26th wettest; and Northeast OK ranked 24th wettest.
  • An El Nino Advisory is in affect. El Nino continues and is still expected to become a moderate event later this fall and winter.
  • According to the Drought Monitor, no drought conditions exist across eastern OK or northwest AR.