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Lakegeezer · 03-25-2005, 08:58 AM

There is a great discussion about the snowpack and potential for floods from the weather service at ftp://iwin.nws.noaa.gov/data/text/FGUS71/KGYX.TXT - in fact a whole lot of hydrological information at http://www.erh.noaa.gov/gyx/hydrology.html

The summary from their March 18'th report (update due April 1) says:

WHILE FLOOD POTENTIAL OVER THE NEXT 7 TO 10 DAYS OR SO IS ABOUT NORMAL...THE RISK OF FLOODING LATER THIS SPRING REMAINS HIGH. THERE IS A HIGH WATER EQUIVALENT IN THE SNOWPACK CURRENTLY AND IT IS POSSIBLE WE WILL SEE THE SNOWPACK INCREASE OVER THE NEXT 7 DAYS. THE CONCERN IS WITH BELOW NORMAL TEMPERATURES EXPECTED WE WILL BE GOING INTO THE LAST WEEK OF MARCH AND THE FIRST PART OF APRIL WITH A SIGNIFICANT SNOWPACK REMAINING AT A TIME WHEN TEMPERATURES CAN SOAR INTO 50S OR 60S AND THE CHANCES OF A HEAVY RAIN ARE GREATER.

ANYONE LIVING OR WORKING IN A FLOOD PRONE AREA SHOULD REVIEW THEIR FLOOD PLAN AND KNOW WHAT TO DUE IN THE EVENT FLOOD WATCHES OR WARNINGS ARE ISSUED.

MAJOR FLOODING DOES NOT OCCUR FROM SNOWMELT ALONE. FLOODING IS DRIVEN BY RAINFALL...HOW MUCH AND IN HOW SHORT A PERIOD OF TIME. RAINFALL IS THE MOST IMPORTANT CONTRIBUTING FACTOR IN DETERMINING THE SEVERITY OF FLOODING.

03-25-2005, 08:58 AM	#8
Lakegeezer Senior Member Join Date: Feb 2003 Location: Moultonboro, NH Posts: 1,682 Blog Entries: 1 Thanks: 356 Thanked 641 Times in 292 Posts	Weather service discussion There is a great discussion about the snowpack and potential for floods from the weather service at ftp://iwin.nws.noaa.gov/data/text/FGUS71/KGYX.TXT - in fact a whole lot of hydrological information at http://www.erh.noaa.gov/gyx/hydrology.html The summary from their March 18'th report (update due April 1) says: WHILE FLOOD POTENTIAL OVER THE NEXT 7 TO 10 DAYS OR SO IS ABOUT NORMAL...THE RISK OF FLOODING LATER THIS SPRING REMAINS HIGH. THERE IS A HIGH WATER EQUIVALENT IN THE SNOWPACK CURRENTLY AND IT IS POSSIBLE WE WILL SEE THE SNOWPACK INCREASE OVER THE NEXT 7 DAYS. THE CONCERN IS WITH BELOW NORMAL TEMPERATURES EXPECTED WE WILL BE GOING INTO THE LAST WEEK OF MARCH AND THE FIRST PART OF APRIL WITH A SIGNIFICANT SNOWPACK REMAINING AT A TIME WHEN TEMPERATURES CAN SOAR INTO 50S OR 60S AND THE CHANCES OF A HEAVY RAIN ARE GREATER. ANYONE LIVING OR WORKING IN A FLOOD PRONE AREA SHOULD REVIEW THEIR FLOOD PLAN AND KNOW WHAT TO DUE IN THE EVENT FLOOD WATCHES OR WARNINGS ARE ISSUED. MAJOR FLOODING DOES NOT OCCUR FROM SNOWMELT ALONE. FLOODING IS DRIVEN BY RAINFALL...HOW MUCH AND IN HOW SHORT A PERIOD OF TIME. RAINFALL IS THE MOST IMPORTANT CONTRIBUTING FACTOR IN DETERMINING THE SEVERITY OF FLOODING. __________________ -lg