CoCoRaHs Station TN-SR-55 January 2010 Precipitation Summary

January proved to be a very well-rounded month. It was cold, snowy, warm and stormy all packed into one month. The first half of the month was cold and wintery. Temperatures were consistently below freezing. The middle of the month was warmer and even produced some thunderstorms. A severe outbreak took place on January 21 resulting in some confirmed tornado touchdowns in Franklin, Marion, & Grundy Counties in Tennessee. On January 24, a very bizarre tornado was reported in Robertson County, TN about 20 minutes from Highland as hardly any precipitation was on the radar when the spin-up occurred.

Two snowfalls took place during the month. Unfortunately, they all took place when I had a scheduled trip planned to Chattanooga. The first snowfall produced approximately 2" on January 8 & 9. The second snowfall on January 30 was much more significant. The entire state of Tennessee was under a Winter Storm Warning as a major snowstorm passed through, dumping approximately 5.5" of snow at my CoCoRaHs station.

I had a total of three multi-day reports during the month involving trips to Chattanooga. The first one was the conclusion of the multi-day report which started on December 17. The second took place during the weekend of January 8 – 11. The third took place January 30 & 31.

DATA SUMMARY FOR JANUARY 2010:

Days with Recordable Precipitation: 9

January 17 (.73")
January 18 (.17")
January 19 (.01")
January 20 (.31")
January 21 (.82")
January 22 (.27")
January 23 (.01")
January 24 (.93")
January 25 (.26")

Days with a Trace of Precipitation ( < .01") : 4 (January 5, 7, 26 & 27)

Multi-day Reports: 3
     (19 days / December 17 – January 4 / 1.26" recorded during the duration)
     (4 days / January 8 – 11 / .08" recorded during the duration)
     (2 days / January 30 – 31 / .50" recorded during the duration)

Estimated days of recorded precipitation during the multi-day report period based on surrounding stations:
January 1 (.02" - .04")
January 2 (Trace)
January 4 (Trace)
January 8 (.03" - .07")
January 9 (.01" - .03")
January 10 (Trace - .01")
January 30 (.35"- .70")
January 31 (0" – Trace)

Most Recorded Precipitation: .93" (January 24)

Least Recorded Precipitation: .01" (January 19 & 23)

Total Recorded Precipitation in January: 4.09"

Total Recorded Precipitation since November 1: 10.88"

CoCoRaHs is a grassroots volunteer network of weather enthusiasts from across America working together in an effort to more accurately gauge precipitation for education and research purposes.

More information can be found at http://cocorahs.org/