<img align=right width=245 height=180 hspace=8 vspace=8 src="//AmbergrisCaye.com/art/keith/9-30-7ptracksm.gif">HURRICANE KEITH INTERMEDIATE ADVISORY NUMBER 9A
NATIONAL WEATHER SERVICE MIAMI FL
7 PM CDT SAT SEP 30 2000
...KEITH CONTINUES TO STRENGTHEN...
A HURRICANE WARNING REMAINS IN EFFECT FOR THE EAST COAST OF YUCATAN
AND BELIZE FROM CABO CATOCHE SOUTHWARD TO MONKEY RIVER TOWN.
A HURRICANE WATCH REMAINS IN EFFECT FOR THE NORTH COAST OF YUCATAN
FROM WEST OF CABO CATOCHE TO PROGRESO.
ALL INTERESTS IN THE NORTHWESTERN CARIBBEAN AND SOUTHERN GULF OF
MEXICO SHOULD MONITOR THE PROGRESS OF THIS DANGEROUS HURRICANE.
AT 7 PM CDT...0000Z...THE EYE OF HURRICANE KEITH WAS LOCATED NEAR
LATITUDE 18.0 NORTH...LONGITUDE 87.0 WEST OR ABOUT 90 MILES...150
KM...EAST-SOUTHEAST OF CHETUMAL MEXICO.
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KEITH HAS BEEN DRIFTING VERY SLOWLY WESTWARD DURING THE PAST SEVERAL
HOURS AND IS EXPECTED TO BEGIN A DRIFT TOWARD THE NORTH-NORTHWEST ON
SUNDAY.
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 105 MPH...169 KM/HR
... WITH HIGHER GUSTS. FURTHER STRENGTHENING IS FORECAST DURING THE
NEXT 24 HOURS.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 35 MILES...55 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 140 MILES...220 KM.
THE LAST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE
RECONNAISSANCE PLANE WAS 966 MB...28.53 INCHES.
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BANDS OF HEAVY RAINS ARE AFFECTING PORTIONS OF THE YUCATAN PENINSULA
...BELIZE...HONDURAS...AND ALSO NORTHERN NICARAGUA. THESE RAINS
COULD PRODUCE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES.
STORM SURGE FLOODING OF 4 TO 6 FEET ABOVE NORMAL TIDE LEVELS...ALONG
WITH LARGE BATTERING WAVES...ARE LIKELY OVER PORTIONS OF THE
HURRICANE WARNING AREA.
REPEATING THE 7 PM CDT POSITION...18.0 N... 87.0 W. MOVEMENT...A
SLOW WESTWARD DRIFT. MAXIMUM SUSTAINED WINDS...105 MPH. MINIMUM
CENTRAL PRESSURE... 966 MB.
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FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
10 PM CDT.
FORECASTER LAWRENCE
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Tropical Depression FIFTEEN
ADV LAT LON TIME WIND PR STAT
1 16.10 -82.90 09/28/21Z 25 1004 TROPICAL DEPRESSION
2 16.20 -83.20 09/29/03Z 25 1004 TROPICAL DEPRESSION
3 16.20 -83.20 09/29/09Z 30 1004 TROPICAL DEPRESSION
4 17.20 -84.30 09/29/15Z 30 1004 TROPICAL DEPRESSION
+12 17.50 -84.50 09/30/00Z 35 - TROPICAL STORM
+24 18.00 -84.70 09/30/12Z 40 - TROPICAL STORM
+36 18.50 -85.00 10/01/00Z 45 - TROPICAL STORM
+48 19.50 -85.00 10/01/12Z 50 - TROPICAL STORM
+72 20.50 -85.00 09/02/12Z 65 - HURRICANE-1
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HURRICANE KEITH DISCUSSION NUMBER 10
NATIONAL WEATHER SERVICE MIAMI FL
11 PM EDT SAT SEP 30 2000
THE CENTER HAS BEEN DRIFTING WESTWARD AND THE INITIAL MOTION
ESTIMATE IS 270/02. THE GUIDANCE IS CHANGED LITTLE FROM SIX HOURS
AGO WITH THE AVIATION MODEL SHOWING KEITH IN A COL REGION BETWEEN
ANTICYLONES TO THE WEST AND EAST AND A WEAK TROUGH JUST NORTH AT 500
MB. THE GFDL AND AVIATION MODEL MOVE KEITH MOSTLY NORTHWARD
THROUGH THE YUCATAN CHANNEL...THE UKMET IS A LITTLE FURTHER WEST
OVER THE EASTERN YUCATAN PENINSULA...AND THE NOGAPS CONTINUES TO
MOVE
WEST-NORTHWESTWARD ACROSS BELIZE AND INTO THE BAY OF CAMPECHE IN 72
HOURS. THE OFFICIAL TRACK FORECAST IS SIMILAR TO THE PREVIOUS
ADVISORY MOVING KEITH ACROSS THE EASTERN YUCATAN...EXCEPT THAT THE
HEADING IS A LITTLE MORE NORTHWARD. REGARDLESS OF THE EXACT HEADING
THAT KEITH TAKES...HURRICANE WINDS AND STORM SURGE SHOULD SHORTLY
AFFECT MUCH OF THE EASTERN YUCATAN PENINSULA. AND IF THE WESTWARD
DRIFT CONTINUES FOR MUCH LONGER...NORTHERN BELIZE COULD ALSO
EXPERIENCE HURRICANE WINDS.
THE LAST RECON FIX AT 21Z GAVE 966 MB CENTRAL PRESSURE AND THE MAX
FLIGHT LEVEL WIND AT 850 MB WAS 101 KNOTS. THIS IS A DROP OF 11 MB
IN 3 HOURS. A DROPSONDE SHOWED WINDS TO 120 KNOTS NEAR 900 MB
DECREASING TO 87 KNOTS JUST ABOVE THE SURFACE. SINCE THEN SATELLITE
INTENSITY ESTIMATES HAVE INCREASED TO THE 100 TO 115 KNOT RANGE.
BASED ON THE ABOVE...THE WIND SPEED IS INCREASED TO 100 KNOTS FOR
THE 03Z ADVISORY AND FORECAST TO 110 KNOTS IN 12 HOURS. THE
STRENGHTENING IS MOST IMPRESSIVE CONSIDERING THAT SOME 25 PERCENT OF
THE CIRCULATION IS ALREADY OVER LAND. SINCE THE FORECAST TRACK HAS
THE CENTER NEAR OR OVER THE EASTERN YUCATAN PENINSULA AT 24 TO 48
HOURS...SOME WEAKENING IS FORECAST AFTER 12 HOURS FOLLOWED BY
STRENGTHENING AGAIN AT 72 HOURS WHEN THE CENTER IS FORECAST TO BE
WELL AWAY FROM LAND IN THE SOUTH CENTRAL GULF OF MEXICO.
FORECASTER LAWRENCE
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FORECAST POSITIONS AND MAX WINDS
INITIAL 01/0300Z 18.1N 87.1W 100 KTS
12HR VT 01/1200Z 18.3N 87.4W 110 KTS
24HR VT 02/0000Z 19.0N 87.5W 90 KTS...NEAR LAND
36HR VT 02/1200Z 20.0N 87.6W 80 KTS...INLAND
48HR VT 03/0000Z 21.0N 87.7W 70 KTS...INLAND
72HR VT 04/0000Z 24.0N 88.0W 85 KTS...INLAND
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[This message has been edited by Marty (edited 09-30-2000).]