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14 Dec 2019 - 19:59 EST
15 Dec 2019 - 00:59 UTC

Post-Tropical Cyclone Sebastien at 41.0°N - 28.9°W

Near Unidentified

Approximately 2600 miles from the U.S. east coast


Storm images and information

NHC Storm Description:

25 Nov 2019 - 3:00 UTC ...SEBASTIEN NO LONGER A TROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... As of 11:00 PM AST Sun Nov 24 the center of Sebastien was located near 41.0, -28.9 with movement NE at 40 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 60 mph.

24 Nov 2019 - 21:00 UTC ...SEBASTIEN OR ITS REMNANTS EXPECTED TO BRING GUSTY WINDS AND RAIN TO PORTIONS OF THE AZORES THROUGH MONDAY MORNING... As of 5:00 PM AST Sun Nov 24 the center of Sebastien was located near 39.2, -32.5 with movement ENE at 39 mph. The minimum central pressure was 994 mb with maximum sustained winds of about 65 mph.

24 Nov 2019 - 15:00 UTC ...SEBASTIEN OR ITS REMNANTS FORECAST TO BRING GUSTY WINDS AND RAIN TO PORTIONS OF THE AZORES LATER TODAY AND TONIGHT... As of 11:00 AM AST Sun Nov 24 the center of Sebastien was located near 37.4, -37.0 with movement NE at 32 mph. The minimum central pressure was 994 mb with maximum sustained winds of about 65 mph.

24 Nov 2019 - 9:00 UTC ...SEBASTIEN ACCELERATING NORTHEASTWARD TOWARD THE WESTERN AZORES... ...FORECAST TO BECOME POST-TROPICAL OVER THE NEXT DAY OR SO... As of 5:00 AM AST Sun Nov 24 the center of Sebastien was located near 36.0, -40.0 with movement NE at 33 mph. The minimum central pressure was 994 mb with maximum sustained winds of about 65 mph.

24 Nov 2019 - 3:00 UTC ...SEBASTIEN REFUSES TO WEAKEN AS IT RACES NORTHEASTWARD... As of 11:00 PM AST Sat Nov 23 the center of Sebastien was located near 34.4, -43.1 with movement NE at 31 mph. The minimum central pressure was 994 mb with maximum sustained winds of about 65 mph.

23 Nov 2019 - 21:00 UTC ...SEBASTIEN GALLOPING QUICKLY NORTHEASTWARD... As of 5:00 PM AST Sat Nov 23 the center of Sebastien was located near 32.4, -45.4 with movement NE at 28 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 65 mph.

23 Nov 2019 - 15:00 UTC ...SEBASTIEN DISORGANIZED BUT APPEARS TO BE MAINTAINING STRENGTH... As of 11:00 AM AST Sat Nov 23 the center of Sebastien was located near 30.4, -47.7 with movement NE at 26 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 65 mph.

23 Nov 2019 - 12:30 UTC ...CENTER OF SEBASTIEN FARTHER NORTHEAST THAN PREVIOUSLY ESTIMATED... As of 8:30 AM AST Sat Nov 23 the center of Sebastien was located near 29.5, -48.5 with movement NE at 24 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 65 mph.

23 Nov 2019 - 9:00 UTC ...SEBASTIEN HOLDING ITS STRENGTH FOR NOW... As of 5:00 AM AST Sat Nov 23 the center of Sebastien was located near 27.8, -50.6 with movement ENE at 17 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 65 mph.

23 Nov 2019 - 3:00 UTC ...TENACIOUS SEBASTIEN DOES NOT KNOW IS NOVEMBER AND REFUSES TO WEAKEN... As of 11:00 PM AST Fri Nov 22 the center of Sebastien was located near 27.0, -52.2 with movement NE at 15 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 65 mph.

22 Nov 2019 - 21:00 UTC ...MORE OF THE SAME FROM SEBASTIEN OVER THE CENTRAL ATLANTIC... As of 5:00 PM AST Fri Nov 22 the center of Sebastien was located near 26.2, -53.7 with movement ENE at 16 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 60 mph.

22 Nov 2019 - 15:00 UTC ...POORLY ORGANIZED SEBASTIEN HEADING EAST-NORTHEAST OVER THE CENTRAL ATLANTIC... As of 11:00 AM AST Fri Nov 22 the center of Sebastien was located near 25.2, -55.3 with movement ENE at 15 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

22 Nov 2019 - 9:00 UTC ...SEBASTIEN NO LONGER EXPECTED TO STRENGTHEN... As of 5:00 AM AST Fri Nov 22 the center of Sebastien was located near 24.8, -57.0 with movement ENE at 15 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 60 mph.

22 Nov 2019 - 3:00 UTC ...SEBASTIEN MOVING FASTER WITH NO CHANGE IN INTENSITY... As of 11:00 PM AST Thu Nov 21 the center of Sebastien was located near 24.7, -57.8 with movement NE at 18 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 60 mph.

21 Nov 2019 - 21:00 UTC ...SEBASTIEN NOW MOVING NORTHEASTWARD ACROSS THE CENTRAL ATLANTIC... As of 5:00 PM AST Thu Nov 21 the center of Sebastien was located near 23.8, -59.7 with movement NE at 9 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 60 mph.

21 Nov 2019 - 15:00 UTC ...SEBASTIEN EXPECTED TO BECOME A HURRICANE BY TONIGHT... As of 11:00 AM AST Thu Nov 21 the center of Sebastien was located near 23.5, -60.5 with movement NNE at 8 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 60 mph.

21 Nov 2019 - 9:00 UTC ...SEBASTIEN FORECAST TO STRENGTHEN OVER THE CENTRAL ATLANTIC... As of 5:00 AM AST Thu Nov 21 the center of Sebastien was located near 23.0, -61.2 with movement NNE at 8 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 60 mph.

21 Nov 2019 - 3:00 UTC ...SEBASTIEN COULD BECOME A HURRICANE ON THURSDAY OR FRIDAY... As of 11:00 PM AST Wed Nov 20 the center of Sebastien was located near 22.2, -61.5 with movement N at 7 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 60 mph.

20 Nov 2019 - 21:00 UTC ...SEBASTIEN MAKES ITS NORTHWARD TURN... ...EXPECTED TO BEGIN INTENSIFYING SOON... As of 5:00 PM AST Wed Nov 20 the center of Sebastien was located near 21.7, -61.5 with movement N at 6 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 50 mph.

20 Nov 2019 - 15:00 UTC ...SEBASTIEN MAINTAINS INTENSITY... ...EXPECTED TO TURN NORTH SOON... As of 11:00 AM AST Wed Nov 20 the center of Sebastien was located near 21.1, -61.7 with movement W at 7 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 50 mph.

20 Nov 2019 - 9:00 UTC ...SEBASTIEN A LITTLE STRONGER... As of 5:00 AM AST Wed Nov 20 the center of Sebastien was located near 21.0, -61.0 with movement NW at 8 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 50 mph.

20 Nov 2019 - 3:00 UTC ...SEBASTIEN FORECAST TO STRENGTHEN ON WEDNESDAY... As of 11:00 PM AST Tue Nov 19 the center of Sebastien was located near 20.7, -60.6 with movement WNW at 9 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 45 mph.

19 Nov 2019 - 21:00 UTC ...SEBASTIEN CONTINUES NORTHWESTWARD... ...EXPECTED TO TURN TO THE NORTHEAST LATE WEDNESDAY... As of 5:00 PM AST Tue Nov 19 the center of Sebastien was located near 20.6, -59.7 with movement NW at 12 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 45 mph.

19 Nov 2019 - 15:00 UTC ...TROPICAL STORM SEBASTIEN FORMS... ...EXPECTED TO REMAIN OVER OPEN WATERS... As of 11:00 AM AST Tue Nov 19 the center of Sebastien was located near 20.1, -58.7 with movement NNW at 8 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 45 mph.

Storm no longer tracked

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GeoColor

True Color daytime, multispectral IR at night
25 Nov 2019 - 10:40 UTC

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Day Convection

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25 Nov 2019 - 10:50 UTC

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Nighttime Microphysics

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25 Nov 2019 - 10:50 UTC

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Sandwich RGB

Multi-spectral blend combines IR band 13 with visual band 3
25 Nov 2019 - 10:50 UTC

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Day Land Cloud

EUMETSAT Natural Color
25 Nov 2019 - 10:50 UTC

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AirMass RGB

RGB composite based on the data from IR and WV
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Images updated every 10 minutes.

Band 1

0.47 µm
Blue - Visible
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Band 2

0.64 µm
Red - Visible
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Band 3

0.86 µm
Veggie - Near IR
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Band 4

1.37 µm
Cirrus - Near IR
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Band 5

1.6 µm
Snow/Ice - Near IR
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Band 6

2.2 µm
Cloud Particle - Near IR
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Band 7

3.9 µm
Shortwave Window - IR
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Band 8

6.2 µm
Upper-Level Water Vapor - IR
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Band 9

6.9 µm
Mid-Level Water Vapor - IR
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Band 10

7.3 µm
Lower-level Water Vapor - IR
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Band 11

8.4 µm
Cloud Top - IR
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Band 12

9.6 µm
Ozone - IR
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Band 13

10.3 µm
Clean Longwave Window - IR
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Band 14

11.2 µm
Longwave Window - IR
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Band 15

12.3 µm
Dirty Longwave Window - IR
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Band 16

13.3 µm
CO₂ Longwave - IR
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