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Hurricane Delta Storm Surge Watch/Warning Map
2020-10-09 04:40:40| National Hurricane Center (Atlantic)
Storm Surge Watch/Warning Map last updated Fri, 09 Oct 2020 02:40:40 GMT
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Hurricane Delta Graphics
2020-10-09 04:37:55| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 09 Oct 2020 02:37:55 GMT Wind Speed Probabilities last updated Fri, 09 Oct 2020 03:24:51 GMT
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Hurricane Delta Forecast Discussion Number 18
2020-10-09 04:37:20| National Hurricane Center (Atlantic)
Issued at 1000 PM CDT Thu Oct 08 2020 000 WTNT41 KNHC 090237 TCDAT1 Hurricane Delta Discussion Number 18 NWS National Hurricane Center Miami FL AL262020 1000 PM CDT Thu Oct 08 2020 Reports from Air Force and NOAA Hurricane Hunter aircraft investigating Delta indicate that the hurricane strengthened a little more this evening. Peak flight-level winds were 120 kt, and the highest SFMR-observed surface winds were 98 kt. Using a blend of adjusted flight-level and surface wind observations, the current intensity estimate is set at 105 kt. The eye became obscured on satellite images a couple of hours ago, but recently it has become apparent again. Delta could intensify a little more within the next 6 hours or so. Thereafter, sharply decreasing oceanic heat content, significantly increasing west-southwesterly shear, and drier mid-level air should cause weakening. The official intensity forecast through landfall is above most of the model guidance. However, even 24-hour tropical cyclone intensity forecasts are still subject to an uncertainty of 1 Saffir-Simpson category, so one should not focus on the exact official landfall intensity forecast. Moreover, even if Delta weakens some, it will still have serious storm surge impacts due to its large size. Aircraft and satellite center fixes show that the hurricane is gradually turning toward the right. The motion is now north-northwestward, or 340/10 kt. Delta should turn northward on Friday as it moves on the western side of a mid-tropospheric high pressure area. Later on Friday, a 500-mb shortwave trough over the southern United States is likely to cause the tropical cyclone to turn north-northeastward and cross the northern Gulf of Mexico coast. Delta should then move northeastward on the eastern side of the trough over the southeastern United States for the next day or two before dissipating near Kentucky. The official track forecast is very close to the previous NHC track, and in very good agreement with the various consensus track predictions. Key Messages: 1. Life-threatening storm surge is expected near and east of where Delta makes landfall Friday, and a Storm Surge Warning is in effect from High Island, Texas, to Ocean Springs, Mississippi. The highest inundation of 7 to 11 feet is expected somewhere between Rockefeller Wildlife Refuge and Morgan City, Louisiana. Residents in the warning area should promptly follow advice given by local officials. The storm surge risk remains high despite the forecast decrease in intensity before landfall since Delta is a relatively large hurricane. 2. Hurricane-force winds are expected Friday afternoon and evening somewhere within the Hurricane Warning area between High Island, Texas, and Morgan City, Louisiana. Hurricane force winds will also spread inland across portions of southern Louisiana near the path of Deltas center Friday evening and Friday night. 3. Heavy rainfall will lead to significant flash flooding and minor to major river flooding in parts of Louisiana Friday and Saturday. Additional flooding is expected across portions of the central Gulf Coast into the Lower Mississippi Valley. FORECAST POSITIONS AND MAX WINDS INIT 09/0300Z 25.7N 93.6W 105 KT 120 MPH 12H 09/1200Z 27.4N 93.7W 105 KT 120 MPH 24H 10/0000Z 29.8N 93.0W 85 KT 100 MPH...INLAND 36H 10/1200Z 32.0N 91.9W 45 KT 50 MPH...INLAND 48H 11/0000Z 33.5N 90.2W 25 KT 30 MPH...INLAND 60H 11/1200Z 34.9N 88.4W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 12/0000Z 36.5N 87.0W 20 KT 25 MPH...POST-TROP/REMNT LOW 96H 13/0000Z...DISSIPATED $$ Forecaster Pasch/Berg
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Hurricane Delta Wind Speed Probabilities Number 18
2020-10-09 04:35:59| National Hurricane Center (Atlantic)
Issued at 0300 UTC FRI OCT 09 2020 000 FONT11 KNHC 090235 PWSAT1 HURRICANE DELTA WIND SPEED PROBABILITIES NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL AL262020 0300 UTC FRI OCT 09 2020 AT 0300Z THE CENTER OF HURRICANE DELTA WAS LOCATED NEAR LATITUDE 25.7 NORTH...LONGITUDE 93.6 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 105 KTS...120 MPH...195 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 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 00Z FRI 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 00Z FRI 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE PERIODS TO TO TO TO TO TO TO 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE 00Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT BIRMINGHAM AL 34 X X( X) 2( 2) X( 2) 1( 3) X( 3) X( 3) WHITING FLD FL 34 X 1( 1) 3( 4) X( 4) 1( 5) X( 5) X( 5) PENSACOLA FL 34 X 2( 2) 3( 5) X( 5) X( 5) X( 5) X( 5) MOBILE AL 34 X 4( 4) 4( 8) X( 8) X( 8) X( 8) X( 8) GULFPORT MS 34 X 9( 9) 8(17) 1(18) X(18) X(18) X(18) STENNIS MS 34 1 13(14) 14(28) X(28) X(28) X(28) X(28) STENNIS MS 50 X 1( 1) 2( 3) X( 3) X( 3) X( 3) X( 3) BURAS LA 34 2 13(15) 8(23) X(23) X(23) X(23) X(23) GFMX 280N 890W 34 2 5( 7) 2( 9) X( 9) X( 9) X( 9) X( 9) JACKSON MS 34 X 8( 8) 30(38) 5(43) X(43) X(43) X(43) JACKSON MS 50 X X( X) 3( 3) 1( 4) X( 4) X( 4) X( 4) NEW ORLEANS LA 34 2 32(34) 16(50) 1(51) X(51) X(51) X(51) NEW ORLEANS LA 50 X 2( 2) 3( 5) X( 5) X( 5) X( 5) X( 5) GFMX 280N 910W 34 18 35(53) 1(54) X(54) X(54) X(54) X(54) GFMX 280N 910W 50 1 4( 5) X( 5) X( 5) X( 5) X( 5) X( 5) BATON ROUGE LA 34 2 64(66) 19(85) X(85) X(85) X(85) X(85) BATON ROUGE LA 50 X 9( 9) 12(21) 1(22) X(22) X(22) X(22) BATON ROUGE LA 64 X 2( 2) 6( 8) X( 8) X( 8) X( 8) X( 8) MORGAN CITY LA 34 2 72(74) 9(83) X(83) X(83) X(83) X(83) MORGAN CITY LA 50 X 12(12) 5(17) X(17) X(17) X(17) X(17) MORGAN CITY LA 64 X 3( 3) 4( 7) X( 7) X( 7) X( 7) X( 7) ALEXANDRIA LA 34 2 62(64) 29(93) X(93) X(93) X(93) X(93) ALEXANDRIA LA 50 X 13(13) 42(55) X(55) X(55) X(55) X(55) ALEXANDRIA LA 64 X 3( 3) 18(21) X(21) X(21) X(21) X(21) LAFAYETTE LA 34 2 91(93) 5(98) X(98) X(98) X(98) X(98) LAFAYETTE LA 50 X 40(40) 24(64) 1(65) X(65) X(65) X(65) LAFAYETTE LA 64 X 16(16) 18(34) X(34) X(34) X(34) X(34) NEW IBERIA LA 34 3 90(93) 4(97) X(97) X(97) X(97) X(97) NEW IBERIA LA 50 X 37(37) 17(54) X(54) X(54) X(54) X(54) NEW IBERIA LA 64 X 13(13) 13(26) X(26) X(26) X(26) X(26) GFMX 280N 930W 34 99 X(99) X(99) X(99) X(99) X(99) X(99) GFMX 280N 930W 50 55 35(90) X(90) X(90) X(90) X(90) X(90) GFMX 280N 930W 64 15 54(69) X(69) X(69) X(69) X(69) X(69) SHREVEPORT LA 34 X 10(10) 13(23) X(23) X(23) X(23) X(23) SHREVEPORT LA 50 X 1( 1) 2( 3) X( 3) X( 3) X( 3) X( 3) FORT POLK LA 34 2 71(73) 16(89) X(89) X(89) X(89) X(89) FORT POLK LA 50 X 20(20) 27(47) X(47) X(47) X(47) X(47) FORT POLK LA 64 X 5( 5) 12(17) X(17) X(17) X(17) X(17) LAKE CHARLES 34 4 91(95) 2(97) X(97) X(97) X(97) X(97) LAKE CHARLES 50 X 64(64) 14(78) 1(79) X(79) X(79) X(79) LAKE CHARLES 64 X 32(32) 20(52) X(52) X(52) X(52) X(52) CAMERON LA 34 19 80(99) X(99) X(99) X(99) X(99) X(99) CAMERON LA 50 2 83(85) 3(88) X(88) X(88) X(88) X(88) CAMERON LA 64 X 60(60) 6(66) X(66) X(66) X(66) X(66) JASPER TX 34 2 59(61) 12(73) X(73) X(73) X(73) X(73) JASPER TX 50 X 11(11) 8(19) X(19) X(19) X(19) X(19) JASPER TX 64 X 2( 2) 3( 5) X( 5) X( 5) X( 5) X( 5) KOUNTZE TX 34 3 66(69) 4(73) X(73) 1(74) X(74) X(74) KOUNTZE TX 50 X 14(14) 4(18) X(18) X(18) X(18) X(18) KOUNTZE TX 64 X 3( 3) 2( 5) X( 5) X( 5) X( 5) X( 5) PORT ARTHUR TX 34 5 81(86) 2(88) X(88) X(88) X(88) X(88) PORT ARTHUR TX 50 X 38(38) 6(44) X(44) X(44) X(44) X(44) PORT ARTHUR TX 64 X 12(12) 5(17) X(17) X(17) X(17) X(17) GALVESTON TX 34 26 48(74) X(74) X(74) X(74) X(74) X(74) GALVESTON TX 50 2 12(14) X(14) X(14) X(14) X(14) X(14) GALVESTON TX 64 X 3( 3) X( 3) X( 3) X( 3) X( 3) X( 3) HOUSTON TX 34 2 18(20) 4(24) X(24) X(24) X(24) X(24) HOUSTON TX 50 X 3( 3) X( 3) X( 3) X( 3) X( 3) X( 3) AUSTIN TX 34 1 2( 3) 1( 4) X( 4) X( 4) X( 4) X( 4) SAN ANTONIO TX 34 1 2( 3) X( 3) X( 3) X( 3) X( 3) X( 3) FREEPORT TX 34 7 14(21) 2(23) X(23) X(23) X(23) X(23) FREEPORT TX 50 X 3( 3) X( 3) X( 3) X( 3) X( 3) X( 3) GFMX 280N 950W 34 84 3(87) X(87) X(87) X(87) X(87) X(87) GFMX 280N 950W 50 9 5(14) X(14) X(14) X(14) X(14) X(14) GFMX 280N 950W 64 2 1( 3) X( 3) X( 3) X( 3) X( 3) X( 3) HIGH ISLAND TX 34 9 69(78) 1(79) X(79) X(79) X(79) X(79) HIGH ISLAND TX 50 X 19(19) 1(20) X(20) X(20) X(20) X(20) HIGH ISLAND TX 64 X 4( 4) 2( 6) X( 6) X( 6) X( 6) X( 6) MATAGORDA TX 34 7 6(13) 1(14) X(14) X(14) X(14) X(14) MATAGORDA TX 50 1 2( 3) X( 3) X( 3) X( 3) X( 3) X( 3) PORT O CONNOR 34 4 4( 8) 1( 9) X( 9) X( 9) X( 9) X( 9) ROCKPORT TX 34 2 2( 4) 1( 5) X( 5) X( 5) X( 5) X( 5) CORPUS CHRISTI 34 2 2( 4) X( 4) X( 4) X( 4) X( 4) X( 4) GFMX 270N 960W 34 10 3(13) X(13) X(13) X(13) X(13) X(13) GFMX 250N 960W 34 2 2( 4) X( 4) X( 4) X( 4) X( 4) X( 4) PENSACOLA NAS 34 X 3( 3) 2( 5) X( 5) X( 5) X( 5) X( 5) KEESLER AB 34 1 8( 9) 6(15) X(15) X(15) X(15) X(15) $$ FORECASTER PASCH
Summary for Hurricane Delta (AT1/AL262020)
2020-10-09 04:35:56| National Hurricane Center (Atlantic)
...DELTA STRENGTHENS A LITTLE MORE... ...EXPECTED TO BRING HURRICANE CONDITIONS AND A LIFE-THREATENING STORM SURGE TO PORTIONS OF THE NORTHERN GULF COAST ON FRIDAY... As of 10:00 PM CDT Thu Oct 8 the center of Delta was located near 25.7, -93.6 with movement NNW at 12 mph. The minimum central pressure was 955 mb with maximum sustained winds of about 120 mph.
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