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Post-tropical Cyclone Gert at 40.5°N - 51.0°W

North Atlantic Ocean

Last observation: 04 Sep 2023 - 21:50 UTC

« 2023 Storms »

19 Aug 2023 - 4 Sep 2023

Approximately 1400 miles from the U.S. east coast


Storm images and information

NHC Storm Description:

4 Sep 2023 - 15:00 UTC ...GERT DISSIPATES... ...THIS IS THE FINAL NHC ADVISORY ON GERT... As of 11:00 AM AST Mon Sep 4 the center of Gert was located near 40.5, -51.0 with movement NNW at 29 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 50 mph.

4 Sep 2023 - 9:00 UTC ...GERT LIKELY TO BE ABSORBED BY POST-TROPICAL CYCLONE IDALIA LATER TODAY... As of 5:00 AM AST Mon Sep 4 the center of Gert was located near 37.6, -51.0 with movement N at 24 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

4 Sep 2023 - 3:00 UTC ...GERT LIKELY TO BE ABSORBED BY POST-TROPICAL CYCLONE IDALIA ON MONDAY... As of 11:00 PM AST Sun Sep 3 the center of Gert was located near 35.4, -50.7 with movement N at 22 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

3 Sep 2023 - 21:00 UTC ...GERT WEAKENS WHILE IT ACCELERATES AROUND POST-TROPICAL CYCLONE IDALIA... As of 5:00 PM AST Sun Sep 3 the center of Gert was located near 32.8, -51.3 with movement NNE at 18 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 50 mph.

3 Sep 2023 - 15:00 UTC ...GERT FORECAST TO BEGIN WEAKENING LATER TODAY AND DISSIPATE TOMORROW... As of 11:00 AM AST Sun Sep 3 the center of Gert was located near 31.2, -51.9 with movement NNE at 15 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 60 mph.

3 Sep 2023 - 9:00 UTC ...GERT MAINTAINING INTENSITY FOR NOW BUT EXPECTED TO DISSIPATE IN A DAY OR SO... As of 5:00 AM AST Sun Sep 3 the center of Gert was located near 29.9, -52.9 with movement NNE at 12 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 60 mph.

3 Sep 2023 - 3:00 UTC ...GERT STRENGTHENS A LITTLE MORE... As of 11:00 PM AST Sat Sep 2 the center of Gert was located near 29.1, -53.4 with movement NNE at 6 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 60 mph.

2 Sep 2023 - 21:00 UTC ...GERT FORECAST TO MOVE MORE QUICKLY AND BECOME ABSORBED BY IDALIA EARLY NEXT WEEK... As of 5:00 PM AST Sat Sep 2 the center of Gert was located near 28.4, -53.8 with movement NNE at 9 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 50 mph.

2 Sep 2023 - 15:00 UTC ...GERT STRENGTHENS A BIT MORE... As of 11:00 AM AST Sat Sep 2 the center of Gert was located near 27.8, -54.1 with movement NNE at 3 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 50 mph.

2 Sep 2023 - 9:00 UTC ...RESILIENT GERT STRONGER BUT NOT MOVING MUCH... As of 5:00 AM AST Sat Sep 2 the center of Gert was located near 27.7, -54.3 with movement NE at 2 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 45 mph.

2 Sep 2023 - 3:00 UTC ...GERT A LITTLE STRONGER WHILE REMAINING STATIONARY... As of 11:00 PM AST Fri Sep 1 the center of Gert was located near 28.2, -54.9 with movement Stationary. The minimum central pressure was 1006 mb with maximum sustained winds of about 45 mph.

1 Sep 2023 - 21:00 UTC ...FOR THE SECOND MONTH IN A ROW GERT BECOMES A TROPICAL STORM... As of 5:00 PM AST Fri Sep 1 the center of Gert was located near 27.8, -54.4 with movement ESE at 5 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 40 mph.

1 Sep 2023 - 15:00 UTC ...GERT COULD BECOME A TROPICAL STORM AGAIN TODAY AFTER 11 DAYS... As of 11:00 AM AST Fri Sep 1 the center of Gert was located near 28.7, -54.6 with movement E at 7 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph.

1 Sep 2023 - 9:00 UTC ...GERT REGENERATES INTO A TROPICAL DEPRESSION... As of 5:00 AM AST Fri Sep 1 the center of Gert was located near 28.7, -55.0 with movement E at 8 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph.

22 Aug 2023 - 15:00 UTC ...GERT BECOMES A POST-TROPICAL REMNANT LOW... ...THIS IS THE FINAL ADVISORY... As of 11:00 AM AST Tue Aug 22 the center of Gert was located near 17.4, -59.7 with movement WNW at 5 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.

22 Aug 2023 - 9:00 UTC ...GERT BARELY A TROPICAL CYCLONE... ...COULD DISSIPATE OR BECOME POST TROPICAL AT ANY TIME... As of 5:00 AM AST Tue Aug 22 the center of Gert was located near 17.2, -58.8 with movement WNW at 8 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.

22 Aug 2023 - 3:00 UTC ...GERT HOLDING ON AS A TROPICAL CYCLONE... ...COULD DISSIPATE OR BECOME POST TROPICAL AT ANY TIME... As of 11:00 PM AST Mon Aug 21 the center of Gert was located near 17.1, -58.4 with movement WNW at 9 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.

21 Aug 2023 - 21:00 UTC ...GERT IS WEAKER... ...COULD DISSIPATE OR BECOME POST TROPICAL AT ANY TIME... As of 5:00 PM AST Mon Aug 21 the center of Gert was located near 17.1, -57.5 with movement WNW at 7 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.

21 Aug 2023 - 15:00 UTC ...GERT IS STILL THERE BUT IT COULD DISSIPATE AT ANY TIME... As of 11:00 AM AST Mon Aug 21 the center of Gert was located near 16.9, -57.0 with movement W at 8 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 40 mph.

21 Aug 2023 - 9:00 UTC ...SHORT-LIVED TROPICAL STORM GERT QUICKLY UNRAVELING... As of 5:00 AM AST Mon Aug 21 the center of Gert was located near 16.7, -56.4 with movement W at 9 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 40 mph.

21 Aug 2023 - 4:00 UTC ...DEPRESSION BECOMES TROPICAL STORM GERT... ...STILL EXPECTED TO BE SHORT-LIVED... As of 12:00 AM AST Mon Aug 21 the center of Gert was located near 16.7, -55.9 with movement WNW at 9 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 40 mph.

21 Aug 2023 - 3:00 UTC ...DEPRESSION EXPECTED TO BECOME A REMNANT LOW TONIGHT... As of 11:00 PM AST Sun Aug 20 the center of Six was located near 16.7, -55.7 with movement WNW at 9 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph.

20 Aug 2023 - 21:00 UTC ...DEPRESSION STEADY DESPITE STRONG WESTERLY SHEAR... As of 5:00 PM AST Sun Aug 20 the center of Six was located near 16.6, -54.7 with movement WNW at 9 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph.

20 Aug 2023 - 15:00 UTC ...DEPRESSION REMAINS STEADY IN STRONG SHEAR... As of 11:00 AM AST Sun Aug 20 the center of Six was located near 16.8, -53.7 with movement W at 12 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph.

20 Aug 2023 - 9:00 UTC ...DEPRESSION CONTINUES TO STRUGGLE WITH STRONG SHEAR... As of 5:00 AM AST Sun Aug 20 the center of Six was located near 16.8, -52.9 with movement W at 15 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.

20 Aug 2023 - 3:00 UTC ...TROPICAL DEPRESSION SIX EXPECTED TO BE SHORT-LIVED... As of 11:00 PM AST Sat Aug 19 the center of Six was located near 17.2, -51.5 with movement W at 14 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.

19 Aug 2023 - 21:00 UTC ...NEW DEPRESSION FORMS... ...EXPECTED TO BE SHORT-LIVED... As of 5:00 PM AST Sat Aug 19 the center of Six was located near 16.7, -50.2 with movement WNW at 16 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.

Post-tropical Cyclone Gert at 40.5°N - 51.0°W

GeoColor

True Color daytime, multispectral IR at night
4 Sep 2023 - 21:50 UTC

Last update > 1 hour

GLM FED

Lightning flash extent over GeoColor
4 Sep 2023 - 21:51 UTC

Last update > 1 hour

Day Convection

RGB used to identify areas of rapid intensification
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Day Night Cloud Micro Combo

Day: show phase of cloud tops; night: distinguish clouds from fog
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Air Mass RGB

RGB based on data from IR & water vapor
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Sandwich RGB

Blend combines IR band 13 with visual band 3
4 Sep 2023 - 21:40 UTC

Last update > 1 hour


Band 1

0.47 µm
Blue - Visible
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 2

0.64 µm
Red - Visible
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 3

0.86 µm
Veggie - Near IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 4

1.37 µm
Cirrus - Near IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 5

1.6 µm
Snow/Ice - Near IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 6

2.2 µm
Cloud Particle - Near IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 7

3.9 µm
Shortwave Window - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 8

6.2 µm
Upper-Level Water Vapor - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 9

6.9 µm
Mid-Level Water Vapor - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 10

7.3 µm
Lower-level Water Vapor - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 11

8.4 µm
Cloud Top - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 12

9.6 µm
Ozone - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 13

10.3 µm
Clean Longwave Window - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 14

11.2 µm
Longwave Window - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 15

12.3 µm
Dirty Longwave Window - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour

Band 16

13.3 µm
CO₂ Longwave - IR
4 Sep 2023 - 21:40 UTC

Last update > 1 hour