Post by NHC Olney Maryland on Sept 18, 2010 13:23:39 GMT -5
BULLETIN
HURRICANE IGOR INTERMEDIATE ADVISORY NUMBER 40A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL/OLNEY MD AL112010
200 AM AST SAT SEP 18 2010
...LARGE HURRICANE IGOR CONTINUES NORTHWESTWARD...
SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...24.9N 62.4W
ABOUT 530 MI...855 KM SSE OF BERMUDA
MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/HR
PRESENT MOVEMENT...NW OR 315 DEGREES AT 13 MPH...20 KM/HR
MINIMUM CENTRAL PRESSURE...942 MB...27.82 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
NONE.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A HURRICANE WARNING IS IN EFFECT FOR...
* BERMUDA
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED
36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-
FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT
OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE
RUSHED TO COMPLETION.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 200 AM AST...0600 UTC...THE CENTER OF HURRICANE IGOR WAS LOCATED
NEAR LATITUDE 24.9 NORTH...LONGITUDE 62.4 WEST. IGOR IS MOVING
TOWARD THE NORTHWEST NEAR 13 MPH...20 KM/HR. THIS GENERAL MOTION
IS EXPECTED TO CONTINUE THROUGH SATURDAY AFTERNOON...FOLLOWED BY A
TURN TOWARD THE NORTH-NORTHWEST LATE SATURDAY...AND A TURN TOWARD
THE NORTH ON SUNDAY. ON THE FORECAST TRACK...THE CENTER OF LARGE
HURRICANE IGOR WILL BE APPROACHING BERMUDA BY LATE SUNDAY. HOWEVER
...ADVERSE WEATHER CONDITIONS COULD BEGIN TO AFFECT BERMUDA SATURDAY
EVENING OR SATURDAY NIGHT.
DATA FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
THAT MAXIMUM SUSTAINED WINDS REMAIN NEAR 110 MPH...175 KM/HR...WITH
HIGHER GUSTS. IGOR IS A CATEGORY TWO HURRICANE ON THE
SAFFIR-SIMPSON HURRICANE WIND SCALE. SOME STRENGTHENING IS
POSSIBLE ON SATURDAY...AND IGOR COULD BECOME A MAJOR HURRICANE
AGAIN. GRADUAL WEAKENING IS EXPECTED TO BEGIN BY EARLY SUNDAY.
IGOR IS A VERY LARGE HURRICANE. HURRICANE FORCE WINDS EXTEND OUTWARD
UP TO 105 MILES...165 KM...FROM THE CENTER...AND TROPICAL STORM
FORCE WINDS EXTEND OUTWARD UP TO 345 MILES...555 KM. NOAA BUOY
41049...LOCATED ABOUT 185 MILES...295 KM...NORTH-NORTHWEST OF THE
CENTER OF IGOR...RECENTLY REPORTED A SUSTAINED WIND OF 43 MPH...
70 KM/HR...AND A GUST OF 51 MPH...83 KM/HR.
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT WAS 942 MB...27.82 INCHES.
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE EXPECTED IN BERMUDA BY LATE
SATURDAY...WITH HURRICANE CONDITIONS EXPECTED ON SUNDAY.
RAINFALL...IGOR IS EXPECTED TO PRODUCE TOTAL RAINFALL ACCUMULATIONS
OF 5 TO 8 INCHES OVER BERMUDA.
STORM SURGE...A DANGEROUS STORM SURGE IS EXPECTED TO PRODUCE
SIGNIFICANT COASTAL FLOODING ON BERMUDA. THE SURGE WILL BE
ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES...ESPECIALLY ALONG THE
SOUTHERN COAST.
SURF...LARGE SWELLS WILL CONTINUE TO AFFECT THE LEEWARD ISLANDS...
PUERTO RICO...THE VIRGIN ISLANDS...HISPANIOLA...AND PORTIONS OF THE
BAHAMAS DURING THE NEXT COUPLE OF DAYS. THESE SWELLS WILL ALSO
CAUSE DANGEROUS SURF CONDITIONS IN BERMUDA DURING THE NEXT SEVERAL
DAYS...WHICH WILL WORSEN AS IGOR APPROACHES. SWELLS WILL CONTINUE
TO AFFECT THE EAST COAST OF THE UNITED STATES THROUGH THE WEEKEND.
THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP
CURRENTS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE
FOR ADDITIONAL INFORMATION.
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 AM AST.
HURRICANE IGOR INTERMEDIATE ADVISORY NUMBER 40A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL/OLNEY MD AL112010
200 AM AST SAT SEP 18 2010
...LARGE HURRICANE IGOR CONTINUES NORTHWESTWARD...
SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...24.9N 62.4W
ABOUT 530 MI...855 KM SSE OF BERMUDA
MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/HR
PRESENT MOVEMENT...NW OR 315 DEGREES AT 13 MPH...20 KM/HR
MINIMUM CENTRAL PRESSURE...942 MB...27.82 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
NONE.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A HURRICANE WARNING IS IN EFFECT FOR...
* BERMUDA
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED
36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-
FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT
OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE
RUSHED TO COMPLETION.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 200 AM AST...0600 UTC...THE CENTER OF HURRICANE IGOR WAS LOCATED
NEAR LATITUDE 24.9 NORTH...LONGITUDE 62.4 WEST. IGOR IS MOVING
TOWARD THE NORTHWEST NEAR 13 MPH...20 KM/HR. THIS GENERAL MOTION
IS EXPECTED TO CONTINUE THROUGH SATURDAY AFTERNOON...FOLLOWED BY A
TURN TOWARD THE NORTH-NORTHWEST LATE SATURDAY...AND A TURN TOWARD
THE NORTH ON SUNDAY. ON THE FORECAST TRACK...THE CENTER OF LARGE
HURRICANE IGOR WILL BE APPROACHING BERMUDA BY LATE SUNDAY. HOWEVER
...ADVERSE WEATHER CONDITIONS COULD BEGIN TO AFFECT BERMUDA SATURDAY
EVENING OR SATURDAY NIGHT.
DATA FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
THAT MAXIMUM SUSTAINED WINDS REMAIN NEAR 110 MPH...175 KM/HR...WITH
HIGHER GUSTS. IGOR IS A CATEGORY TWO HURRICANE ON THE
SAFFIR-SIMPSON HURRICANE WIND SCALE. SOME STRENGTHENING IS
POSSIBLE ON SATURDAY...AND IGOR COULD BECOME A MAJOR HURRICANE
AGAIN. GRADUAL WEAKENING IS EXPECTED TO BEGIN BY EARLY SUNDAY.
IGOR IS A VERY LARGE HURRICANE. HURRICANE FORCE WINDS EXTEND OUTWARD
UP TO 105 MILES...165 KM...FROM THE CENTER...AND TROPICAL STORM
FORCE WINDS EXTEND OUTWARD UP TO 345 MILES...555 KM. NOAA BUOY
41049...LOCATED ABOUT 185 MILES...295 KM...NORTH-NORTHWEST OF THE
CENTER OF IGOR...RECENTLY REPORTED A SUSTAINED WIND OF 43 MPH...
70 KM/HR...AND A GUST OF 51 MPH...83 KM/HR.
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT WAS 942 MB...27.82 INCHES.
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE EXPECTED IN BERMUDA BY LATE
SATURDAY...WITH HURRICANE CONDITIONS EXPECTED ON SUNDAY.
RAINFALL...IGOR IS EXPECTED TO PRODUCE TOTAL RAINFALL ACCUMULATIONS
OF 5 TO 8 INCHES OVER BERMUDA.
STORM SURGE...A DANGEROUS STORM SURGE IS EXPECTED TO PRODUCE
SIGNIFICANT COASTAL FLOODING ON BERMUDA. THE SURGE WILL BE
ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES...ESPECIALLY ALONG THE
SOUTHERN COAST.
SURF...LARGE SWELLS WILL CONTINUE TO AFFECT THE LEEWARD ISLANDS...
PUERTO RICO...THE VIRGIN ISLANDS...HISPANIOLA...AND PORTIONS OF THE
BAHAMAS DURING THE NEXT COUPLE OF DAYS. THESE SWELLS WILL ALSO
CAUSE DANGEROUS SURF CONDITIONS IN BERMUDA DURING THE NEXT SEVERAL
DAYS...WHICH WILL WORSEN AS IGOR APPROACHES. SWELLS WILL CONTINUE
TO AFFECT THE EAST COAST OF THE UNITED STATES THROUGH THE WEEKEND.
THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP
CURRENTS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE
FOR ADDITIONAL INFORMATION.
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 AM AST.