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21 Jul 2026 - 01:41 EDT
21 Jul 2026 - 05:41 UTC

Tropical Storm Bertha at 28.2°N - 85.9°W

Gulf of America

Last observation: 21 Jul 2026 - 05:40 UTC

« Active Storms »

19 Jul 2026 - 21 Jul 2026


NHC Storm Description:

21 Jul 2026 - 3:00 UTC ...TROPICAL STORM WARNING ISSUED FOR A PORTION OF THE NORTHERN GULF COAST... As of 10:00 PM CDT Mon Jul 20 the center of Bertha was located near 28.2, -85.9 with movement at mph. The minimum central pressure was 999 mb with maximum sustained winds of about 40 mph.

21 Jul 2026 - 0:00 UTC ...NOAA HURRICANE HUNTERS FIND THAT THE DEPRESSION HAS STRENGTHENED INTO TROPICAL STORM BERTHA... As of 7:00 PM CDT Mon Jul 20 the center of Bertha was located near 28.6, -86.0 with movement WNW at 3 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 40 mph.

20 Jul 2026 - 21:00 UTC ...DEPRESSION CONTINUES DRIFTING ERRATICALLY NORTHWESTWARD... ...AIR FORCE RESERVE AND NOAA AIRCRAFT TO INVESTIGATE IT THIS EVENING... As of 4:00 PM CDT Mon Jul 20 the center of Two was located near 28.7, -85.8 with movement NW at 3 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 35 mph.

20 Jul 2026 - 18:00 UTC ...DEPRESSION DRIFTING ERRATICALLY NORTHWESTWARD... ...EXPECTED TO BECOME A TROPICAL STORM THIS AFTERNOON OR TONIGHT... As of 1:00 PM CDT Mon Jul 20 the center of Two was located near 28.6, -85.6 with movement NW at 3 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 35 mph.

20 Jul 2026 - 15:00 UTC ...DEPRESSION GETTING BETTER ORGANIZED... ...NEW WATCHES ISSUED FOR PORTIONS OF THE GULF COAST... As of 10:00 AM CDT Mon Jul 20 the center of Two was located near 28.5, -85.6 with movement NW at 3 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.

20 Jul 2026 - 12:00 UTC ...DEPRESSION EXPECTED TO BECOME A TROPICAL STORM LATER TODAY... ...AIR FORCE HURRICANE HUNTER AIRCRAFT CURRENTLY INVESTIGATING THE SYSTEM... As of 7:00 AM CDT Mon Jul 20 the center of Two was located near 28.6, -85.6 with movement NW at 3 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.

20 Jul 2026 - 9:00 UTC ...DEPRESSION EXPECTED TO BECOME A TROPICAL STORM LATER TODAY... ...TROPICAL STORM WATCH EXTENDED TO MISSISSIPPI/ALABAMA BORDER... As of 4:00 AM CDT Mon Jul 20 the center of Two was located near 28.5, -85.4 with movement NW at 3 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.

20 Jul 2026 - 6:00 UTC ...DEPRESSION CONTINUES DRIFTING NORTH-NORTHWESTWARD... As of 1:00 AM CDT Mon Jul 20 the center of Two was located near 28.4, -85.3 with movement NNW at 3 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 30 mph.

20 Jul 2026 - 3:00 UTC ...DEPRESSION MOVING SLOWLY NORTH-NORTHWESTWARD... ...TROPICAL STORM CONDITIONS POSSIBLE IN THE FLORIDA PANHANDLE BY LATE MONDAY... As of 10:00 PM CDT Sun Jul 19 the center of Two was located near 28.0, -85.1 with movement NNW at 3 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.

20 Jul 2026 - 0:00 UTC ...TROPICAL STORM CONDITIONS POSSIBLE IN THE FLORIDA PANHANDLE BY LATE MONDAY... As of 7:00 PM CDT Sun Jul 19 the center of Two was located near 27.7, -85.0 with movement at mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.

19 Jul 2026 - 21:00 UTC ...TROPICAL DEPRESSION MEANDERING OFF THE WEST COAST OF FLORIDA... ...TROPICAL STORM CONDITIONS ARE POSSIBLE IN THE FLORIDA PANHANDLE BY LATE MONDAY... As of 4:00 PM CDT Sun Jul 19 the center of Two was located near 27.5, -85.0 with movement at mph. The minimum central pressure was 1010 mb with maximum sustained winds of about 30 mph.

19 Jul 2026 - 18:00 UTC ...TROPICAL DEPRESSION MEANDERING OFF THE WEST COAST OF FLORIDA... As of 1:00 PM CDT Sun Jul 19 the center of Two was located near 27.8, -85.0 with movement NNW at 1 mph. The minimum central pressure was 1011 mb with maximum sustained winds of about 30 mph.

19 Jul 2026 - 15:00 UTC ...TROPICAL DEPRESSION FORMS OFF THE WEST COAST OF FLORIDA... ...TROPICAL STORM WATCH ISSUED FOR THE FLORIDA PANHANDLE... As of 10:00 AM CDT Sun Jul 19 the center of Two was located near 28.0, -85.3 with movement NNW at 2 mph. The minimum central pressure was 1011 mb with maximum sustained winds of about 30 mph.

GeoColor - True Color daytime, multispectral IR at night
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GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

Gulf of America GeoColor animation
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GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

Southern Mississippi Valley GeoColor animation
empty placeholder

GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

Southeast GeoColor animation
empty placeholder

GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

Tropical Atlantic GeoColor animation
empty placeholder

GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

GOES-West - All States GeoColor animation
empty placeholder

GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

Mesoscale - 28°N - 86°W
empty placeholder

GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

 • CIRA GeoColor Product Quick Guide

GeoColor

True Color daytime, multispectral IR at night
21 Jul 2026 - 02:50 UTC

Last update > 1 hour

GLM FED

Lightning flash extent over GeoColor
21 Jul 2026 - 05:21 UTC

Day Convection

RGB used to identify areas of rapid intensification
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Day Night Cloud Micro Combo

Day: show cloud-top phase; Night: distinguish clouds / fog
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Air Mass RGB

RGB based on data from IR & water vapor
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Sandwich RGB

Blend combines IR band 13 with visual band 3
21 Jul 2026 - 02:40 UTC

Last update > 1 hour


Band 1

0.47 µm
Blue - Visible
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 2

0.64 µm
Red - Visible
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 3

0.86 µm
Veggie - Near IR
21 Jul 2026 - 03:00 UTC

Last update > 1 hour

Band 4

1.37 µm
Cirrus - Near IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 5

1.6 µm
Snow/Ice - Near IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 6

2.2 µm
Cloud Particle - Near IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 7

3.9 µm
Shortwave Window - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 8

6.2 µm
Upper-Level Water Vapor - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 9

6.9 µm
Mid-Level Water Vapor - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 10

7.3 µm
Lower-level Water Vapor - IR
21 Jul 2026 - 03:00 UTC

Last update > 1 hour

Band 11

8.4 µm
Cloud Top - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 12

9.6 µm
Ozone - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 13

10.3 µm
Clean Longwave Window - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 14

11.2 µm
Longwave Window - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 15

12.3 µm
Dirty Longwave Window - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour

Band 16

13.3 µm
CO₂ Longwave - IR
21 Jul 2026 - 02:40 UTC

Last update > 1 hour