Chris Swafford
on August 13, 2021
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WTNT81 KNHC 131509
TCVAT1
FRED WATCH/WARNING ADVISORY NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL AL062021
1109 AM EDT FRI AUG 13 2021
.TROPICAL DEPRESSION FRED
CAUTION...THIS PRODUCT ONLY APPROXIMATELY CONVEYS THE EXTENT OF
TROPICAL CYCLONE WIND AND SURGE WATCHES AND WARNINGS. PLEASE SEE
THE LATEST PUBLIC ADVISORY FROM THE NATIONAL HURRICANE CENTER FOR
THE PRECISE LATERAL EXTENT OF WIND WATCHES AND WARNINGS ALONG THE
COAST...AS WELL AS THE APPROXIMATE LATERAL EXTENT OF SURGE WATCHES
AND WARNINGS. THE PRECISE EXTENT OF SURGE WATCHES AND WARNINGS
CAN BE FOUND IN THE NWS NATIONAL DIGITAL FORECAST DATABASE HAZARD
GRIDS.
FLZ076>078-132315-
/O.CON.KNHC.TR.W.1006.000000T0000Z-000000T0000Z/
1109 AM EDT FRI AUG 13 2021
$$
FLZ069-075-162-165-174-132315-
/O.CON.KNHC.TR.A.1006.000000T0000Z-000000T0000Z/
1109 AM EDT FRI AUG 13 2021
$$
ATTN...WFO...KEY...MFL...TBW...
WTPZ22 KNHC 132045
TCMEP2
HURRICANE LINDA FORECAST/ADVISORY NUMBER 15
NWS NATIONAL HURRICANE CENTER MIAMI FL EP122021
2100 UTC FRI AUG 13 2021
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
HURRICANE CENTER LOCATED NEAR 17.5N 112.9W AT 13/2100Z
POSITION ACCURATE WITHIN 15 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 12 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 965 MB
EYE DIAMETER 20 NM
MAX SUSTAINED WINDS 100 KT WITH GUSTS TO 120 KT.
64 KT....... 20NE 15SE 15SW 20NW.
50 KT....... 50NE 60SE 30SW 40NW.
34 KT.......100NE 110SE 70SW 100NW.
12 FT SEAS..210NE 180SE 90SW 150NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
REPEAT...CENTER LOCATED NEAR 17.5N 112.9W AT 13/2100Z
AT 13/1800Z CENTER WAS LOCATED NEAR 17.2N 112.3W
FORECAST VALID 14/0600Z 18.2N 114.6W
MAX WIND 110 KT...GUSTS 135 KT.
64 KT... 20NE 20SE 15SW 20NW.
50 KT... 50NE 50SE 30SW 40NW.
34 KT...100NE 90SE 70SW 100NW.
FORECAST VALID 14/1800Z 18.9N 116.9W
MAX WIND 105 KT...GUSTS 130 KT.
64 KT... 30NE 25SE 20SW 25NW.
50 KT... 50NE 40SE 30SW 50NW.
34 KT... 90NE 80SE 70SW 90NW.
FORECAST VALID 15/0600Z 19.2N 119.2W
MAX WIND 100 KT...GUSTS 120 KT.
64 KT... 30NE 20SE 20SW 30NW.
50 KT... 50NE 40SE 40SW 50NW.
34 KT... 90NE 70SE 60SW 90NW.
FORECAST VALID 15/1800Z 19.1N 121.3W
MAX WIND 95 KT...GUSTS 115 KT.
64 KT... 30NE 20SE 20SW 30NW.
50 KT... 50NE 40SE 40SW 40NW.
34 KT... 90NE 70SE 70SW 90NW.
FORECAST VALID 16/0600Z 18.7N 123.3W
MAX WIND 85 KT...GUSTS 105 KT.
50 KT... 40NE 30SE 30SW 40NW.
34 KT... 80NE 60SE 70SW 80NW.
FORECAST VALID 16/1800Z 18.2N 125.2W
MAX WIND 75 KT...GUSTS 90 KT.
50 KT... 40NE 30SE 30SW 40NW.
34 KT... 80NE 60SE 70SW 80NW.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM
ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
OUTLOOK VALID 17/1800Z 17.9N 129.0W
MAX WIND 65 KT...GUSTS 80 KT.
OUTLOOK VALID 18/1800Z 19.0N 133.0W
MAX WIND 55 KT...GUSTS 65 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.5N 112.9W
NEXT ADVISORY AT 14/0300Z
$$
FORECASTER PAPIN/BRENNAN
Major Hurricane Linda 2021
Last Modified: 2021-08-13 21:00 UTC
Hurricane Linda 2021Linda 2021
Linda has become an impressive looking hurricane this afternoon (August 13). The eye that first became evident on geostationary satellite imagery this morning has continued to clear out and warm while the surrounding cold convection associated with the eyewall wraps around the eye. The convective structure on microwave imagery has also improved, with a distinct eye and closed eyewall apparent in an earlier 14:17 UTC SSMIS pass. The 18:00 UTC subjective and objective Dvorak estimates were in unanimous agreement with T5.5/102 knots provided by SAB, TAFB, and ADT sources. Therefore, the initial intensity has been increased to 115 mph (100 knots) this advisory, making Linda a major hurricane.
Linda continues to move steadily to the west-northwest, at 300/12 knots. The track philosophy has not changed much over the past 24 hours. A mid- to upper-level ridge currently centered over the southwestern United States is expected to expand westward, building in to the northwest of the hurricane. This evolution should result in Lisa's motion bending left, first to the west, and then to the west-southwest over the next 2-3 days. The track guidance remains tightly clustered near and just slightly poleward of the previous forecast track. The latest NHC track forecast was nudged just slightly northward over the first few days, but is nearly on top of the previous forecast by the end of the period.
Linda has rapidly intensified, with a 35-knots increase over the past 24 hours, and the hurricane still has an opportunity to intensify a bit more over the next 12 hours. After 24 hours, Linda will begin to cross over gradually decreasing sea-surface temperatures and into a and drier mid-level environment. These factors should lead to gradual weakening. One fly in the ointment is that the shear diagnosed by SHIPS guidance is expected to remain low and easterly while sea-surface temperatures remain between 26-27°C through 60 hours. Both the ECMWF and HWRF simulated brightness temperatures during that time suggest that Linda could develop a stable annular structure, which often results in a slower than expected weakening rate. For this reason, the latest intensity forecast only shows gradual weakening through 60 hours, which is a bit above the HCCA consensus aid. More rapid weakening is likely at the end of the forecast period when Linda will move over sub 25°C water.
Forecaster Papin/Brennan. Information provided by the National Hurricane Center (NHC).
https://youtu.be/ryRl_7wAszE
https://earthquake.usgs.gov/earthquakes/map/?extent=-17.14079,-126.5625&extent=70.4368,-63.28125&map=false
https://youtu.be/ba5_stmq1bM
Dimension: 1280 x 945
File Size: 114.18 Kb
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