Hydrologic Analysis for Madison, AL

Local Precip Index 2.77 in

Clima-Sim Predicted Mean Temps updated 24 Sep 10

NCDC Monthly Mean is for each month over the 30-year period, adjusted as necessary, and includes the liquid water equivalent from snowfall. NCDC Climate Data

Local Precip Index    2.77 in
Month	Mean since 2007	Current Total	Mean Difference
January	4.78 in	5.36 in (2012)	0.58 in
February	3.50 in	2.72 in (2012)	-0.78 in
March	6.20 in	9.13 in (2012)	2.93 in
April	5.75 in	10.80 in (2011)	5.05 in
May	4.93 in	2.40 in (2011)	-2.53 in
June	2.03 in	4.32 in (2011)	2.29 in
July	4.89 in	4.17 in (2011)	-0.72 in
August	4.19 in	4.51 in (2011)	0.32 in
September	3.79 in	1.15 in (2011)	-2.64 in
October	6.11 in	5.53 in (2011)	-0.58 in
November	4.71 in	7.59 in (2011)	2.88 in
December	6.16 in	2.13 in (2011)	-4.03 in
NCDC 30 year Mean: 57.51 in       MadALwx's Mean Precip since 2007: 57.04 in
MadALwx's Recent 12-Month Total: 59.81 in
MadALwx's Wettest Month on Record:	5/2009 with 11.6 in
YTD Precip Differential
Avg YTD Precip: 6.41 in
Current Precip Total: 44.57 in.
YTD Differential: 38.16 in
(at MadALwx since 2008)

How Hydrologic observations are obtained.

This station's data/observations are collected by a Davis VP2 Professional Wireless Weather Station. Observations are collected every 1sec and data reduction is performed by Weather Display software. The station is comprised of an anemometer, barometer, temperature and humidity sensors, a .01" rain gauge, solar radiation sensor, soil moisture sensors, and 4 thermo-hydro sensors situated in optimal positions for highest accuracy possible. This trend is based on observations recorded at MadALwx since 2007.

Accurate analysis can only be obtained by correctly sited sensors. This weather station is sited IAW the procedures outlined in the CWOP handbook. Data collected by this weather station is utilized by NOAA, CWOP, and other weather organizations.