Tropical Weather
TROPICAL STORM CRISTOBAL ADVISORY NUMBER 18
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032008
500 AM EDT WED JUL 23 2008
...CRISTOBAL BECOMING AN EXTRATROPICAL CYCLONE...
AT 500 AM EDT...0900Z...THE CENTER OF TROPICAL STORM CRISTOBAL WAS
LOCATED NEAR LATITUDE 44.7 NORTH...LONGITUDE 55.9 WEST OR ABOUT 380
MILES...610 KM...EAST OF HALIFAX NOVA SCOTIA.
CRISTOBAL IS MOVING TOWARD THE EAST-NORTHEAST NEAR 31 MPH...50
KM/HR. A TURN TOWARD THE EAST IS EXPECTED DURING THE NEXT 24
HOURS...FOLLOWED BY A TURN SOUTHEAST.
MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/HR...WITH HIGHER
GUSTS. NO SIGNIFICANT CHANGE IN STRENGTH IS FORECAST DURING THE
NEXT 24 HOURS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 85 MILES...140 KM
FROM THE CENTER.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 1003 MB...29.62 INCHES.
REPEATING THE 500 AM EDT POSITION...44.7 N...55.9 W. MOVEMENT
TOWARD...EAST-NORTHEAST NEAR 31 MPH. MAXIMUM SUSTAINED WINDS...45
MPH. MINIMUM CENTRAL PRESSURE...1003 MB.
THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON CRISTOBAL.
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NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032008
500 AM EDT WED JUL 23 2008
...CRISTOBAL BECOMING AN EXTRATROPICAL CYCLONE...
AT 500 AM EDT...0900Z...THE CENTER OF TROPICAL STORM CRISTOBAL WAS
LOCATED NEAR LATITUDE 44.7 NORTH...LONGITUDE 55.9 WEST OR ABOUT 380
MILES...610 KM...EAST OF HALIFAX NOVA SCOTIA.
CRISTOBAL IS MOVING TOWARD THE EAST-NORTHEAST NEAR 31 MPH...50
KM/HR. A TURN TOWARD THE EAST IS EXPECTED DURING THE NEXT 24
HOURS...FOLLOWED BY A TURN SOUTHEAST.
MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/HR...WITH HIGHER
GUSTS. NO SIGNIFICANT CHANGE IN STRENGTH IS FORECAST DURING THE
NEXT 24 HOURS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 85 MILES...140 KM
FROM THE CENTER.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 1003 MB...29.62 INCHES.
REPEATING THE 500 AM EDT POSITION...44.7 N...55.9 W. MOVEMENT
TOWARD...EAST-NORTHEAST NEAR 31 MPH. MAXIMUM SUSTAINED WINDS...45
MPH. MINIMUM CENTRAL PRESSURE...1003 MB.
THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON CRISTOBAL.
Scroll down for more information
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TROPICAL STORM CRISTOBAL DISCUSSION NUMBER 18
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032008
500 AM EDT WED JUL 23 2008
ALL OF THE DEEP CONVECTION NEAR THE CENTER OF CIRCULATION HAS
DISSIPATED AND CRISTOBAL NO LONGER HAS THE APPEARANCE OF A TROPICAL
CYCLONE. THE FLORIDA STATE UNIVERSITY PHASE SPACE DIAGRAMS USING
GLOBAL MODEL OUTPUT ALSO SUGGEST THAT CRISTOBAL HAS TRANSITIONED
INTO AN ASYMMETRIC COLD CORE LOW...I.E. AN EXTRATROPICAL CYCLONE.
WITH THAT...CRISTOBAL IS DECLARED EXTRATROPICAL AND THIS WILL BE
THE LAST ADVISORY ON THIS SYSTEM ISSUED BY THE NATIONAL HURRICANE
CENTER. ADDITIONAL INFORMATION ON CRISTOBAL CAN BE FOUND IN HIGH
SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS
HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.
THE DEGRADATION OF THE SATELLITE APPEARANCE SUGGEST CRISTOBAL HAS
WEAKENED SO THE INITIAL INTENSITY IS SET AT 40 KT. SINCE DYNAMICAL
MODELS INDICATE A LACK OF BAROCLINIC FORCING...CONTINUED WEAKENING
IS EXPECTED DURING THE NEXT DAY OR SO PRIOR TO CRISTOBAL MERGING
WITH OR BEING ABSORBED BY A FRONTAL SYSTEM OVER THE NORTH ATLANTIC.
FORECAST POSITIONS AND MAX WINDS
INITIAL 23/0900Z 44.7N 55.9W 40 KT...EXTRATROPICAL
12HR VT 23/1800Z 45.3N 51.0W 35 KT...EXTRATROPICAL
24HR VT 24/0600Z 44.4N 44.8W 35 KT...EXTRATROPICAL
36HR VT 24/1800Z 42.6N 38.7W 30 KT...EXTRATROPICAL
48HR VT 25/0600Z...ABSORBED
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032008
500 AM EDT WED JUL 23 2008
ALL OF THE DEEP CONVECTION NEAR THE CENTER OF CIRCULATION HAS
DISSIPATED AND CRISTOBAL NO LONGER HAS THE APPEARANCE OF A TROPICAL
CYCLONE. THE FLORIDA STATE UNIVERSITY PHASE SPACE DIAGRAMS USING
GLOBAL MODEL OUTPUT ALSO SUGGEST THAT CRISTOBAL HAS TRANSITIONED
INTO AN ASYMMETRIC COLD CORE LOW...I.E. AN EXTRATROPICAL CYCLONE.
WITH THAT...CRISTOBAL IS DECLARED EXTRATROPICAL AND THIS WILL BE
THE LAST ADVISORY ON THIS SYSTEM ISSUED BY THE NATIONAL HURRICANE
CENTER. ADDITIONAL INFORMATION ON CRISTOBAL CAN BE FOUND IN HIGH
SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS
HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.
THE DEGRADATION OF THE SATELLITE APPEARANCE SUGGEST CRISTOBAL HAS
WEAKENED SO THE INITIAL INTENSITY IS SET AT 40 KT. SINCE DYNAMICAL
MODELS INDICATE A LACK OF BAROCLINIC FORCING...CONTINUED WEAKENING
IS EXPECTED DURING THE NEXT DAY OR SO PRIOR TO CRISTOBAL MERGING
WITH OR BEING ABSORBED BY A FRONTAL SYSTEM OVER THE NORTH ATLANTIC.
FORECAST POSITIONS AND MAX WINDS
INITIAL 23/0900Z 44.7N 55.9W 40 KT...EXTRATROPICAL
12HR VT 23/1800Z 45.3N 51.0W 35 KT...EXTRATROPICAL
24HR VT 24/0600Z 44.4N 44.8W 35 KT...EXTRATROPICAL
36HR VT 24/1800Z 42.6N 38.7W 30 KT...EXTRATROPICAL
48HR VT 25/0600Z...ABSORBED
