There was another exceptional Auroral display over the upper Midwest during the early morning on 8 October 2024. Day Night Band imagery, above, from Suomi NPP (at 0800 UTC) and from — despite the label — NOAA-20 (at 0823 UTC), shows the big change in areal coverage of the northern... Read More
There was another exceptional Auroral display over the upper Midwest during the early morning on 8 October 2024. Day Night Band imagery, above, from Suomi NPP (at 0800 UTC) and from — despite the label — NOAA-20 (at 0823 UTC), shows the big change in areal coverage of the northern lights in less than half an hour! An Aurora also occurred early on the 7th, as shown in the images here.
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Visible imagery over Hurricane Milton after sunrise on 7 October, above, shows a compact system about 100 miles northwest of the Yucatan Peninsula. The predicted track of the storm center is superimposed on the imagery. Note that Milton’s sustained winds at 1500 UTC, 135 knots, represents an 80-knot increase over... Read More
Visible imagery over Hurricane Milton after sunrise on 7 October, above, shows a compact system about 100 miles northwest of the Yucatan Peninsula. The predicted track of the storm center is superimposed on the imagery. Note that Milton’s sustained winds at 1500 UTC, 135 knots, represents an 80-knot increase over the previous 24 hours. Only 2 Atlantic Basin storms have strengthened more rapidly (source). Milton is forecast to move just south of due east, before turning northeastward towards Florida (where preparations for the storm should be completing). Milton on Monday morning is in a region of very warm water, and in an atmosphere with little shear, as shown below (analyses from this website). Much stronger shear is present over the northern Gulf, however.
The animation below shows upper-level water vapor infrared imagery (Band 8, 6.19) along with GLM observations of Flash Extent Density and GOES-16 Derived Motion Wind vectors. Lightning is observed within the eye of Milton, a hallmark of rapidly-developing tropical cyclones. In addition, the very strong shear over the northern Gulf is apparent: east-northeast winds at low levels with very strong west-southwest winds aloft. The satellite-derived winds also show the characteristic anticyclone over the hurricane. Note, however, that the Day Night Band imagery over Milton (from NOAA-21, at 0802 UTC, downloaded from this site) shows no evidence of lightning near the eye at that time.
Dry air can weaken hurricanes. Is there any evidence of dry air in the vicinity of Milton? The Band 8 imagery above shows dry air over the northern Gulf, far from Milton. MIMIC Total Precipitable water fields, below (source), for the 24 hours ending a 1400 UTC show abundant moisture surrounding the storm. Also apparent in that animation: the front moving south into the Deep South. The circulation with this system will have a bearing on the future path and strength of Milton.
Interest on Florida, on both west coasts from north of Tampa to the Keys, and on the east coast from Jacksonville to north of Miami, should closely monitor the progress of this storm. For the latest information refer to the National Hurricane Center, and the NWS Forecast offices in Tampa, Jacksonville, Melbourne, Miami and Key West.
GOES-19 is undergoing post-launch testing and is considered to be preliminary/non-operational by NOAA. Satellite operators were able to capture several hours of 30-second mesoscale imagery of Hurricane Milton on October 7, 2024. There are some missing times in the animation because of missing data and some poorly navigated images, which is not unexpected during post-launch testing.
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NOAA was formed on October 3, 1970. To commemorate this date, a few GOES related figures. GOES has been around since 1975, although there were earlier non-operational versions operated by NASA, such as ATS.H/TThese GOES-19 ABI are early images (preliminary and non-operational), beta stage. Both McIDAS-X and geo2grid software was used in... Read More
NOAA was formed on October 3, 1970. To commemorate this date, a few GOES related figures. GOES has been around since 1975, although there were earlier non-operational versions operated by NASA, such as ATS.
These GOES-19 ABI are early images (preliminary and non-operational), beta stage. Both McIDAS-X and geo2grid software was used in generating these images, using data via the UW/SSEC Data Services. More about GOES-16 and GOES-18. T. Schmit works for NOAA/NESDIS/STAR, from Madison, Wisconsin.
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ABIThere are many examples of GOES monitoring the Moon’s shadow on the Earth. This example below occurred on October 2, 2024 and is the CIMSS true color RGB composite from the (Preliminary/Non-operational) GOES-19 ABI. A link to the mp4. And a loop that extends to 21 UTC. Another blog on GOES-19 ABI.In general, images that have been Raleigh-corrected can make the region of the shadow appear larger.... Read More
There are many examples of GOES monitoring the Moon’s shadow on the Earth. This example below occurred on October 2, 2024 and is the CIMSS true color RGB composite from the (Preliminary/Non-operational) GOES-19 ABI. A link to the mp4. And a loop that extends to 21 UTC. Another blog on GOES-19 ABI.
In general, images that have been Raleigh-corrected can make the region of the shadow appear larger. Two examples are below (SSEC GOES-West and East) and the CIRA geoColor.
The SUVI also saw the Moon, as it passed in front of the Sun.
A 6-panel SUVI image from near 16 UTC.
More SUVI imagery are available from the SWPC and the UW/SSEC (including RGBs and daily 6-panels).
These GOES-19 ABI are early images (preliminary and non-operational), beta stage. Both McIDAS-X and geo2grid software was used in generating these images, using data via the UW/SSEC Data Services. More about GOES-16 and GOES-18. T. Schmit works for NOAA/NESDIS/STAR, from Madison, Wisconsin.
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