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5 Dec 2024 - 10:33 UTC

Post-tropical Cyclone Bill at 43.5°N - 57.0°W

North Atlantic Ocean

Last observation: 02 Jun 2023 - 13:35 UTC

« 2021 Storms »

14 Jun 2021 - 16 Jun 2021

Approximately 1200 miles from the U.S. east coast


Storm images and information

NHC Storm Description:

16 Jun 2021 - 3:00 UTC ...BILL BECOMES EXTRATROPICAL... ...THIS IS THE LAST NHC ADVISORY... As of 11:00 PM AST Tue Jun 15 the center of Bill was located near 43.5, -57.0 with movement NE at 29 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 50 mph.

15 Jun 2021 - 21:00 UTC ...BILL ALMOST AN EXTRATROPICAL CYCLONE... As of 5:00 PM AST Tue Jun 15 the center of Bill was located near 41.6, -59.6 with movement NE at 36 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 60 mph.

15 Jun 2021 - 15:00 UTC ...BILL RACING NORTHEASTWARD... ...EXPECTED TO BECOME EXTRATROPICAL LATER TODAY... As of 11:00 AM AST Tue Jun 15 the center of Bill was located near 40.5, -62.0 with movement NE at 38 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 60 mph.

15 Jun 2021 - 9:00 UTC ...BILL STRENGTHENS A LITTLE MORE... ...EXPECTED TO BE A SHORT-LIVED TROPICAL STORM... As of 5:00 AM AST Tue Jun 15 the center of Bill was located near 38.5, -67.2 with movement NE at 31 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 50 mph.

15 Jun 2021 - 3:00 UTC ...DEPRESSION STRENGTHENS INTO TROPICAL STORM BILL... ...LIKELY TO BE SHORT-LIVED... As of 11:00 PM AST Mon Jun 14 the center of Bill was located near 36.7, -69.8 with movement NE at 23 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 45 mph.

14 Jun 2021 - 21:00 UTC ...DEPRESSION EXPECTED TO BECOME A TROPICAL STORM TONIGHT... As of 5:00 PM EDT Mon Jun 14 the center of Two was located near 35.5, -72.0 with movement NE at 18 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.

14 Jun 2021 - 15:00 UTC ...TROPICAL DEPRESSION FORMS OFFSHORE OF NORTH CAROLINA... ...HEADING AWAY FROM THE UNITED STATES... As of 11:00 AM EDT Mon Jun 14 the center of Two was located near 35.0, -73.7 with movement NE at 21 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.

Post-tropical Cyclone Bill at 43.5°N - 57.0°W

GeoColor

True Color daytime, multispectral IR at night
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

GLM FED

Lightning flash extent density over GeoColor
16 Jun 2021 - 10:56 UTC

Last update > 1 hour

Day Convection

RGB used to identify areas of rapid intensification
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Day Land Cloud

EUMETSAT Natural Color
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Night Microphysics

RGB used to distinguish clouds from fog
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Air Mass RGB

RGB composite based on the data from IR and WV
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Sandwich RGB

Multi-spectral blend combines IR band 13 with visual band 3
16 Jun 2021 - 10:50 UTC

Last update > 1 hour


Band 1

0.47 µm
Blue - Visible
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 2

0.64 µm
Red - Visible
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 3

0.86 µm
Veggie - Near IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 4

1.37 µm
Cirrus - Near IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 5

1.6 µm
Snow/Ice - Near IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 6

2.2 µm
Cloud Particle - Near IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 7

3.9 µm
Shortwave Window - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 8

6.2 µm
Upper-Level Water Vapor - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 9

6.9 µm
Mid-Level Water Vapor - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 10

7.3 µm
Lower-level Water Vapor - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 11

8.4 µm
Cloud Top - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 12

9.6 µm
Ozone - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 13

10.3 µm
Clean Longwave Window - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 14

11.2 µm
Longwave Window - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 15

12.3 µm
Dirty Longwave Window - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour

Band 16

13.3 µm
CO₂ Longwave - IR
16 Jun 2021 - 10:50 UTC

Last update > 1 hour