June 28, 2006
at 2:00 P.M.
FLOOD LEVEL PREDICTION DOWNSIZED
To: Residents and Businesses
Yesterday, on Tuesday, June 27 at 4:00 p.m., the federal River Forecasting Center predicted the Susquehanna River would go to 25.1 feet by Thursday night and into early Friday morning, which would be a major flood.
Today, they have revised their predictions twice. They now forecast the river to reach 20.5 feet tomorrow, Thursday, June 29 around 1:00 p.m., with a slow drop in river levels after that.
To give citizens an idea of the range of predictions received in the past three days, this is the information received by the City:
On Monday, at 7:00 a.m., the river crest (maximum level) was projected to be 6 feet; at 9:00 a.m., it was revised to 15.3 feet.
On Tuesday morning, this was revised to 13.2 feet; at 11:30 a.m., it was changed to 18 feet; at 4:00 p.m., the ominous message that it would be 25.1 feet was received, which triggered a far greater preparatory response; as officials responsible for emergency management, we have the absolute duty to initiate major steps as and when a major flood warning is received.
Today, at 6:30 a.m. and again at 9:00 a.m., the prediction was again revised and affirmed to say 19.7 feet and at 11:10 a.m., it was changed yet another time to predict a level of 20.5 feet. (The National Weather Channel briefly posted an announcement of a river crest for 15.3 feet but National Weather Service representatives advised this was not accurate.)
In 25 years, this is the most significant series of varied river level forecasts ever seen and, as a direct result of yesterday’s 25.1 foot prediction, extensive activity --- and their costs --- were undertaken. Many residents and businesses also endured expense and effort to prepare for what was expected to be major flooding and, in some areas, evacuation.
The current prediction of 20.5 feet is subject to further change.
No one should assume we are “out of the woods”. There will still be flooding. Based on a 20.5 foot prediction, it is not likely there will be any evacuations but some streets will have street water and many basements will have back-up water. This will be especially true in the Shipoke Neighborhood. A large part of City Island, including the surface parking lots, will be covered by river water. The Paxton Creek and Spring Creek have a high potential of backing-up and creating localized flooding in their basin areas, which will also cause some street closures.
The flood warning bulletin issued Tuesday night, June 27, is therefore modified as a result of this new and revised forecast.
The City is asking the appropriate agencies to conduct a review of how the river level forecasts could vary so widely in such a short period of time to see if more concise and accurate predictions can be achieved in the future --- not only to prevent what turns out to be unnecessary cost and effort by local government and citizens but to avoid the inevitable doubt and skepticism that would arise if predictions lack public confidence.
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Mayor Stephen R. Reed