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Hurricane Delta Forecast Advisory Number 12
2020-10-07 16:49:10| National Hurricane Center (Atlantic)
Issued at 1500 UTC WED OCT 07 2020 000 WTNT21 KNHC 071449 TCMAT1 HURRICANE DELTA FORECAST/ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL262020 1500 UTC WED OCT 07 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WATCH HAS BEEN ISSUED FOR THE NORTHERN GULF COAST FROM HIGH ISLAND TEXAS TO THE ALABAMA/FLORIDA BORDER INCLUDING CALCASIEU LAKE...VERMILION BAY...LAKE PONTCHARTRAIN...LAKE MAUREPAS...LAKE BORGNE AND MOBILE BAY. A HURRICANE WATCH HAS BEEN ISSUED FOR THE NORTHERN GULF COAST FROM HIGH ISLAND TEXAS EASTWARD TO GRAND ISLE LOUISIANA. A TROPICAL STORM WATCH HAS BEEN ISSUED ALONG THE TEXAS COAST FROM WEST OF HIGH ISLAND TO SAN LUIS PASS. A TROPICAL STORM WATCH HAS ALSO BEEN ISSUED ALONG THE NORTHERN GULF COAST FROM EAST OF GRAND ISLE, LOUISIANA TO BAY ST. LOUIS MISSISSIPPI...INCLUDING THE CITY OF NEW ORLEANS...LAKE PONTCHARTRAIN AND LAKE MAUREPAS. THE GOVERNMENT OF CUBA HAS DISCONTINUED ALL WARNINGS FOR CUBA. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A STORM SURGE WATCH IS IN EFFECT FOR... * HIGH ISLAND TEXAS TO THE ALABAMA/FLORIDA BORDER INCLUDING CALCASIEU LAKE...VERMILION BAY...LAKE PONTCHARTRAIN...LAKE MAUREPAS...LAKE BORGNE AND MOBILE BAY A HURRICANE WARNING IS IN EFFECT FOR... * TULUM TO DZILAM MEXICO * COZUMEL A HURRICANE WATCH IS IN EFFECT FOR... * HIGH ISLAND TEXAS TO GRAND ISLE LOUISIANA A TROPICAL STORM WARNING IS IN EFFECT FOR... * PUNTA HERRERO TO TULUM MEXICO * DZILAM TO PROGRESO MEXICO A TROPICAL STORM WATCH IS IN EFFECT FOR... * SAN LUIS PASS TO WEST OF HIGH ISLAND TEXAS * EAST OF GRAND ISLE LOUISIANA TO BAY ST. LOUIS MISSISSIPPI... INCLUDING NEW ORLEANS * LAKE PONTCHARTRAIN AND LAKE MAUREPAS A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE- THREATENING INUNDATION, FROM RISING WATER MOVING INLAND FROM THE COASTLINE, IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS. FOR A DEPICTION OF AREAS AT RISK, PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC, AVAILABLE AT HURRICANES.GOV. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS, CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. HURRICANE CENTER LOCATED NEAR 21.4N 88.0W AT 07/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 15 KT ESTIMATED MINIMUM CENTRAL PRESSURE 975 MB MAX SUSTAINED WINDS 90 KT WITH GUSTS TO 110 KT. 64 KT....... 25NE 25SE 10SW 20NW. 50 KT....... 40NE 40SE 30SW 30NW. 34 KT.......110NE 100SE 80SW 90NW. 12 FT SEAS..180NE 120SE 0SW 0NW. 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 21.4N 88.0W AT 07/1500Z AT 07/1200Z CENTER WAS LOCATED NEAR 21.1N 87.4W FORECAST VALID 08/0000Z 22.8N 90.2W MAX WIND 95 KT...GUSTS 115 KT. 64 KT... 25NE 20SE 10SW 20NW. 50 KT... 40NE 40SE 20SW 30NW. 34 KT...110NE 100SE 80SW 90NW. FORECAST VALID 08/1200Z 24.3N 92.4W MAX WIND 100 KT...GUSTS 120 KT. 64 KT... 25NE 20SE 15SW 20NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT...120NE 110SE 80SW 100NW. FORECAST VALID 09/0000Z 26.0N 93.3W MAX WIND 105 KT...GUSTS 130 KT. 64 KT... 30NE 25SE 20SW 30NW. 50 KT... 60NE 50SE 40SW 50NW. 34 KT...140NE 120SE 90SW 110NW. FORECAST VALID 09/1200Z 28.1N 93.3W MAX WIND 105 KT...GUSTS 130 KT. 64 KT... 40NE 30SE 25SW 30NW. 50 KT... 70NE 60SE 50SW 60NW. 34 KT...140NE 130SE 100SW 110NW. FORECAST VALID 10/0000Z 30.8N 92.4W...INLAND MAX WIND 70 KT...GUSTS 85 KT. 50 KT... 40NE 50SE 30SW 40NW. 34 KT... 90NE 140SE 80SW 80NW. FORECAST VALID 10/1200Z 33.2N 90.9W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 60SE 30SW 30NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 11/1200Z 36.5N 86.2W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 12/1200Z 39.5N 81.0W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.4N 88.0W INTERMEDIATE PUBLIC ADVISORY...WTNT31 KNHC/MIATCPAT1...AT 07/1800Z NEXT ADVISORY AT 07/2100Z $$ FORECASTER BROWN
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Tropical Storm Norbert Forecast Discussion Number 8
2020-10-07 16:47:39| National Hurricane Center (East Pacific)
Issued at 900 AM MDT Wed Oct 07 2020 323 WTPZ44 KNHC 071447 TCDEP4 Tropical Storm Norbert Discussion Number 8 NWS National Hurricane Center Miami FL EP192020 900 AM MDT Wed Oct 07 2020 Norbert has recovered somewhat from the dry air intrusion that occurred last night. A new burst of deep convection developed near the center early this morning, but the associated cloud tops are beginning to warm and the convection is becoming displaced over the northeastern portion of the circulation. The initial intensity is being held at 35 kt, and is based off the Dvorak intensity estimates from TAFB, SAB, and the UW-CIMSS ADT. The storm is struggling to stay organized despite being over warm waters and in an environment of relatively low shear. By Thursday, the SHIPS guidance suggests that the shear will increase to around 10-15 kt. This shear, along with occasional dry air intrusions similar to one experienced last night, could gradually weaken the system. On the other hand, the warm waters could counteract the moderately negative environmental factors. The latest NHC forecast still favors the latter scenario, and shows Norbert remaining a 35-kt tropical storm throughout the forecast period. This intensity forecast is unchanged from the previous one, and is a compromise between the SHIPS guidance and the model consensus. The initial motion is stationary, although the exact center location has been difficult to pinpoint this morning. The steering flow is forecast to remain very weak over the next couple of days, and most of the models show little movement through tonight followed by a slow westward drift Wednesday through Thursday. By late this week, a mid-level ridge is forecast to build to the north to northeast of the cyclone, which should force Norbert on a west-northwestward track. The latest NHC track forecast is near the previous one through 72 h, but was adjusted a little north after that time due to a northward shift in the guidance. However, the new track forecast remains south of the consensus aids late in the forecast period. FORECAST POSITIONS AND MAX WINDS INIT 07/1500Z 14.2N 107.1W 35 KT 40 MPH 12H 08/0000Z 14.1N 107.1W 35 KT 40 MPH 24H 08/1200Z 14.0N 107.2W 35 KT 40 MPH 36H 09/0000Z 13.9N 107.5W 35 KT 40 MPH 48H 09/1200Z 13.8N 107.9W 35 KT 40 MPH 60H 10/0000Z 14.1N 108.5W 35 KT 40 MPH 72H 10/1200Z 14.9N 109.3W 35 KT 40 MPH 96H 11/1200Z 16.5N 111.0W 35 KT 40 MPH 120H 12/1200Z 17.5N 112.2W 35 KT 40 MPH $$ Forecaster Latto
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Tropical Storm Norbert Wind Speed Probabilities Number 8
2020-10-07 16:47:38| National Hurricane Center (East Pacific)
Issued at 1500 UTC WED OCT 07 2020 243 FOPZ14 KNHC 071447 PWSEP4 TROPICAL STORM NORBERT WIND SPEED PROBABILITIES NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL EP192020 1500 UTC WED OCT 07 2020 AT 1500Z THE CENTER OF TROPICAL STORM NORBERT WAS LOCATED NEAR LATITUDE 14.2 NORTH...LONGITUDE 107.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 12Z WED AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 12Z WED 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN PERIODS TO TO TO TO TO TO TO 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN 12Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 15N 105W 34 X X( X) 1( 1) 1( 2) 1( 3) X( 3) X( 3) 15N 110W 34 X 1( 1) X( 1) 2( 3) 13(16) 7(23) 1(24) 15N 110W 50 X X( X) X( X) X( X) 3( 3) 1( 4) 1( 5) 20N 110W 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) ISLA SOCORRO 34 X X( X) X( X) X( X) 1( 1) 3( 4) 2( 6) ISLA CLARION 34 X X( X) X( X) X( X) X( X) 1( 1) 4( 5) 20N 115W 34 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) $$ FORECASTER LATTO
Tropical Storm Norbert Public Advisory Number 8
2020-10-07 16:47:14| National Hurricane Center (East Pacific)
Issued at 900 AM MDT Wed Oct 07 2020 000 WTPZ34 KNHC 071447 TCPEP4 BULLETIN Tropical Storm Norbert Advisory Number 8 NWS National Hurricane Center Miami FL EP192020 900 AM MDT Wed Oct 07 2020 ...NORBERT NEARLY STATIONARY WELL OFFSHORE OF SOUTHWESTERN MEXICO... SUMMARY OF 900 AM MDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...14.2N 107.1W ABOUT 380 MI...610 KM SSW OF MANZANILLO MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...STATIONARY MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 900 AM MDT (1500 UTC), the center of Tropical Storm Norbert was located near latitude 14.2 North, longitude 107.1 West. Norbert is nearly stationary and the storm is expected to move little over the next day or so. A drift to the west to west-northwest is expected by late this week. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast during the next few days. Tropical-storm-force winds extend outward up to 25 miles (35 km) from the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 300 PM MDT. $$ Forecaster Latto
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Tropical Storm Norbert Forecast Advisory Number 8
2020-10-07 16:46:44| National Hurricane Center (East Pacific)
Issued at 1500 UTC WED OCT 07 2020 000 WTPZ24 KNHC 071446 TCMEP4 TROPICAL STORM NORBERT FORECAST/ADVISORY NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL EP192020 1500 UTC WED OCT 07 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 14.2N 107.1W AT 07/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH OR 360 DEGREES AT 0 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 0SE 20SW 20NW. 12 FT SEAS.. 60NE 30SE 0SW 0NW. 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 14.2N 107.1W AT 07/1500Z AT 07/1200Z CENTER WAS LOCATED NEAR 14.2N 107.1W FORECAST VALID 08/0000Z 14.1N 107.1W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 10NE 10SE 20SW 20NW. FORECAST VALID 08/1200Z 14.0N 107.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 10SE 10SW 20NW. FORECAST VALID 09/0000Z 13.9N 107.5W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 10SE 10SW 20NW. FORECAST VALID 09/1200Z 13.8N 107.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 10SE 10SW 20NW. FORECAST VALID 10/0000Z 14.1N 108.5W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 10SE 10SW 20NW. FORECAST VALID 10/1200Z 14.9N 109.3W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 10SE 10SW 20NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 11/1200Z 16.5N 111.0W MAX WIND 35 KT...GUSTS 45 KT. OUTLOOK VALID 12/1200Z 17.5N 112.2W MAX WIND 35 KT...GUSTS 45 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.2N 107.1W NEXT ADVISORY AT 07/2100Z $$ FORECASTER LATTO
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