Tropical Depression GABRIELLE:Discussions and Images

[Coredesat]

[BigA]

Gabby is moving east-northeast ahead of the trough. It is also firing convection near its core. I think it come back to tropical storm over the next 6 hours if it keeps up. If it does so it could become the 3rd 1+ ace storm.

I've got to admire a storm that wants to strengthen without threatening anyone, so I hope Gabby makes TS strength again.

How does one calculate ACE? Much Thanks.

[RL3AO]

How does one calculate ACE? Much Thanks.

Sum the squares of the strength at each 6 hour advisory while it is a tropical storm or stronger.

If you had a weak tropical storm with 8 advisories:

30 kt = 0 ACE (not storm strength)
35 kt = 0.1225 (35 squared divided by 10000)
40 kt = 0.1600 (40 squared divided by 10000)
40 kt = 0.1600
40 kt = 0.1600
35 kt = 0.1225
35 kt = 0.1225
30 kt = 0
Total ACE = 0.8475

PS: You divide each number by 10000 to create smaller, more manageable numbers.

[HURAKAN]

Convection beginning to wane.

[HURAKAN]

she continues!!

[HURAKAN]

520
WTNT32 KNHC 111442
TCPAT2
BULLETIN
TROPICAL DEPRESSION GABRIELLE ADVISORY NUMBER 16
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL072007
1100 AM EDT TUE SEP 11 2007

...GABRIELLE DISSIPATING WELL SOUTH OF NOVA SCOTIA....

AT 1100 AM EDT...1500Z...THE DISSIPATING CENTER OF TROPICAL
DEPRESSION GABRIELLE WAS ESTIMATED NEAR LATITUDE 39.6 NORTH...
LONGITUDE 65.3 WEST OR ABOUT 355 MILES...575 KM...SOUTH-SOUTHWEST
OF HALIFAX NOVA SCOTIA.

THE DEPRESSION IS MOVING TOWARD THE EAST-NORTHEAST NEAR 22 MPH...
35 KM/HR...AND THIS MOTION IS EXPECTED TO CONTINUE DURING THE NEXT
24 HOURS WITH AN INCREASE IN FORWARD SPEED. ON THIS TRACK...THE
REMNANTS OF GABRIELLE WILL PASS SOUTH OF NOVA SCOTIA TODAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH...55 KM/HR...WITH HIGHER
GUSTS...TO THE SOUTHEAST OF THE CENTER. EVEN THOUGH THE CIRCULATION
IS DISSIPATING...WINDS TO NEAR GALE FORCE WILL PERSIST WITH THE
REMNANTS OF GABRIELLE FOR THE NEXT 12 TO 24 HOURS.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 1008 MB...29.77 INCHES.

REPEATING THE 1100 AM EDT POSITION...39.6 N...65.3 W. MOVEMENT
TOWARD...EAST-NORTHEAST NEAR 22 MPH. MAXIMUM SUSTAINED WINDS...35
MPH. MINIMUM CENTRAL PRESSURE...1008 MB.

THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE
FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.

$$
FORECASTER BROWN

[CrazyC83]

See ya later Gabrielle! Don't let the crash on you! Better luck in 2013!