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-------- Original Message --------
732
NOUS41 KWBC 141539
PNSWSH
Public Information Statement
National Weather Service Headquarters Washington DC
1140 AM EDT Wed August 14 2013
To: Subscribers:
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
-NOAAPORT
Other NWS Partners and NWS Employees
From: Mark Tew
Chief, Marine and Coastal Weather Services Branch
Subject: Soliciting Comments on Experimental Probabilistic
Tropical Cyclone Storm Surge and Tide above Datum
Through November 30, 2013
Effective immediately and continuing through November 30, 2013,
NWS is seeking user feedback on experimental Probabilistic
Tropical Cyclone Storm Surge and Tide above Datum. The
experimental product consists of two suites of graphics:
1. Probability of storm surge and tide above datum: Series of
graphics shows probabilities, in percent, of storm surge with
tide exceeding 2 through 25 feet above North American Datum of
1988 (NAVD88), at 1 foot intervals.
2. Exceedance height of storm surge and tide above datum: Series
of graphics which show heights of storm surge with tide, in feet
above NAVD88, which will be exceeded by a given percentage of
storms. The suite of graphics range from 10 to 50 percent, at
10 percent intervals.
The graphics are a statistical output from an ensemble of Sea
Lake and Overland Surges from Hurricanes (SLOSH) model runs. All
ensemble members are based on the current National Hurricane
Center (NHC) tropical cyclone advisory. Ensemble members take
into account historical error characteristics by varying input
parameters such as forward speed, cross track location, radius of
maximum wind, and hurricane intensity. Each ensemble member has a
specific time associated with it, which allows SLOSH to calculate
a gridded tide the model combines with the surge, thereby
producing overland flooding based on storm surge plus tide, aka
storm tide.
The graphics are available whenever a hurricane watch or warning
is in effect for any portion of the Gulf or Atlantic U.S.
continental coasts. On a case by case basis, the graphics will
also be available when a tropical storm watch or warning is in
effect. The graphics are available online at:
http://www.nws.noaa.gov/mdl/psurge2.0/
by selecting "Above Datum" under the Datum drop down menu on the
left hand side.
Please provide feedback by using the brief survey and comment
form available on line at:
http://www.weather.gov/survey/nws-survey.php?code=phss
If you have questions regarding this notice...please contact:
John Kuhn
National Weather Service
Marine and Coastal Weather Services Branch
Silver Spring Maryland 20910
Telephone: 301-713-1677 X121
Email: John.F.Kuhn@xxxxxxxx
National Public Information Statements are online at:
http://www.weather.gov/os/notif.htm
$$
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