WX4NHC OPERATIONS ANNOUNCEMENT - HURRICANE EARL

WX4NHC, the Amateur Radio station
at the National Hurricane Center in Miami,
will be activating it's HF and EchoLink/IRLP station
on Thursday, September 2nd, 2010 at 4pm EDT (2000z).

PLEASE RELAY TO STATIONS IN THE AFFECTED AREAS.

We request all land based stations as well as ships at sea in the areas
affected to send us weather data (measured or estimated) and damage reports.

If you are in the affected area and normally monitor on a local Net on
VHF, 40 or 80 meters, we would appreciate your checking into the HWN NET
or EchoLink/IRLP Net at least once per Hour to receive the latest
Hurricane Advisories and to report your local conditions.

Please do not venture outside during the hurricane to gather weather data.

Comply with all evacuation notices from your local authorities.

Your safety is the first priority.


There are many constantly changing atmospheric variables that affect the
storm's track and strength.

Please refer to the National Hurricane Center Advisories for official
information. www.nhc.noaa.gov<http://www.nhc.noaa.gov/>

WX4NHC will be monitoring the Hurricane Watch Net www.hwn.org
<http://www.hwn.org/> on 14.325 MHz.

Secondary HF frequencies will be 7.268 MHz and 3.950 MHz ± QRM,
should we loose propagation on 20 meters.

EchoLink "WX-Talk" Conference Room and IRLP node 9219 will also be
monitored. www.voipwx.net<http://www.voipwx.net/>

WX4NHC will also monitor CWOP, APRS and MADIS/MESONET Automated weather
stations in the affected area.

Surface Reports using our On-line Hurricane Report form will be monitored.

Amateur Weather Enthusiasts and ON-NHC Volunteers may report directly
to WX4NHC on-line.

http://www.wx4nhc.org/WX-form1.html

ON-NHC Volunteers are both Ham Radio Operators and Non-Ham weather
observers that use their own weather instruments to submit "Surface
Reports" directly to NHC over the Internet via the WX4NHC on-line report
form. These "Surface Reports" are very important as they give Hurricane
Specialists at NHC a better idea of what is actually happening on the
ground level during the storm.

The WX4NHC Group continues to expand its efforts to increase the
quantity and quality of surface reports to include many different modes
of reception and groups of people; including HF, VHF/UHF IRLP&
EchoLink, VHF& HF APRS, CWOP NOAA Program and ON-NHC Weather Observers
Network.

See our web site for more information: www.wx4nhc.org
<http://www.wx4nhc.org/>

WX4NHC is very proud to have maintained an active Amateur Radio Station
at the National Hurricane Center for 30 years this season.

We appreciate all of the volunteers who help with our efforts.

OUR MISSION: TO HELP SAVE LIVES.

Advisory excerpts from the National Hurricane Center:



"HURRICANE EARL INTERMEDIATE ADVISORY NUMBER 29A

NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL072010

200 PM EDT WED SEP 01 2010



...LARGE HURRICANE EARL CONTINUES RELENTLESSLY TOWARD THE

NORTHWEST...POSES A THREAT TO THE MID ATLANTIC COAST..."



"HAZARDS AFFECTING LAND

----------------------

WINDS...TROPICAL STORM FORCE WINDS ARE EXPECTED TO REACH THE NORTH

CAROLINA COAST WITHIN THE WARNING AREA BY THURSDAY AFTERNOON WITH

HURRICANE FORCE WINDS OCCURRING BY LATE THURSDAY.



STORM SURGE...A DANGEROUS STORM SURGE WILL RAISE WATER

LEVELS BY AS MUCH AS 3 TO 5 FEET ABOVE GROUND LEVEL WITHIN THE

HURRICANE WARNING AREA. NEAR THE COAST...THE SURGE WILL BE

ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES.



RAINFALL...ACCUMULATIONS OF 1 TO 2 INCHES...WITH ISOLATED

MAXIMUM AMOUNTS OF 4 INCHES ARE EXPECTED OVER THE BAHAMAS AND

EXTREME EASTERN NORTH CAROLINA INCLUDING THE OUTER BANKS.

SURF...LARGE SWELLS FROM EARL SHOULD AFFECT THE BAHAMAS AND THE

SOUTHEASTERN COAST OF THE UNITED STATES TODAY. THESE SWELLS WILL

LIKELY CAUSE DANGEROUS SURF CONDITIONS AND RIP CURRENTS."

"AT 200 PM EDT...1800 UTC...THE EYE OF HURRICANE EARL WAS LOCATEDNEAR
LATITUDE 25.7 NORTH...LONGITUDE 72.7 WEST. EARL IS MOVINGTOWARD THE
NORTHWEST NEAR 17 MPH...28 KM/HR...AND THIS MOTION ISEXPECTED TO
CONTINUE TODAY WITH A GRADUAL TURN TO THE NORTH ONTHURSDAY. ON THE
FORECAST TRACK...THE CORE OF THE HURRICANE WILLCONTINUE TO MOVE WELL
EAST AND NORTHEAST OF THE BAHAMAS TODAY ANDTONIGHT...AND WILL APPROACH
THE NORTH CAROLINA COAST BY LATETHURSDAY. MAXIMUM SUSTAINED WINDS REMAIN
NEAR 125 MPH...205 KM/HR...WITHHIGHER GUSTS. EARL IS A CATEGORY THREE
HURRICANE ON THESAFFIR-SIMPSON HURRICANE WIND SCALE.
HOWEVER...PRELIMINARY DATA FROMAN AIR FORCE PLANE INDICATE THAT THE
HURRICANE IS BEGINNING TOSTRENGTHEN AND EARL COULD AGAIN BECOME A
CATEGORY FOUR HURRICANELATER TODAY. EARL IS A LARGE HURRICANE.
HURRICANE FORCE WINDS EXTEND OUTWARD UPTO 90 MILES...150 KM...FROM THE
CENTER...AND TROPICAL STORM FORCEWINDS EXTEND OUTWARD UP TO 200
MILES...325 KM. LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR
FORCERECONNAISSANCE PLANE WAS 941 MB...27.79 INCHES."