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September 2009 September 2009 began on a cool note at Grand Island, and Hastings as average daily temperatures were below normal for the first six days of the month. Readings recovered to normal or above for the second and third weeks, then a strong cutoff upper low pressure system brought another round of cool weather from the 21st to the 25th. The end of the month continued to see a swing in temperatures and the coldest air settled in on the 29th when the temperature dropped to the freezing mark (32 degrees) at Grand Island, and to 34 degrees at Hastings. All in all, the average monthly temperature for September 2009 was one degree below normal at Grand island and 2.1 degrees below normal at Hastings.
Precipitation at Grand Island totaled 0.96 inch which was 1.47 inches below normal. At Hastings, 2.81 inches fell during September, which was 0.07 inch above normal. The majority of the rain at Hastings fell on a single day, the 11th, when 2.02 inches accumulated.
The following is a summary of noteworthy weather events across south central Nebraska and north central Kansas during September:
- September 3: Thunderstorms became severe during the afternoon and evening and produced hail the size of golf balls and 60 mph winds. Click here for the storm reports.
- September 7: The afternoon on Labor Day saw another round of severe thunderstorms across portions of north central Kansas and south central Nebraska. Hail the size of golf balls, 70 mph winds and locally heavy rainfall over an inch occurred. Click here for the storm reports.
- September 11: Thunderstorms doused portions of south central Nebraska with heavy rainfall in excess of one and two inches. Click here for the rainfall totals.
- September 21: A strong cold front swept across the central plains. Thunderstorms developed along the frontal boundary and produced locally heavy rainfall in excess of an inch. Click here for the rainfall totals.
- September 22: A potent, nearly stationary upper low pressure system brought widespread rainfall to south central Nebraska and north central Kansas. Some locations tallied rainfall amounts between an inch and a half and two inches. Click here for the rainfall amounts.
- September 29: Cold morning temperatures in the upper 20s to lower 30s occurred across portions of south central Nebraska and north central Kansas. This marked the first frost/freeze for some locations. Click here for the cold temperatures.
