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Tropical Storm Zeta Public Advisory Number 3A
2020-10-25 12:58:03| National Hurricane Center (Atlantic)
Issued at 800 AM EDT Sun Oct 25 2020 000 WTNT33 KNHC 251157 TCPAT3 BULLETIN Tropical Storm Zeta Intermediate Advisory Number 3A NWS National Hurricane Center Miami FL AL282020 800 AM EDT Sun Oct 25 2020 ...HURRICANE WATCH ISSUED FOR PORTIONS OF THE YUCATAN PENINSULA... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...17.8N 83.8W ABOUT 290 MI...470 KM SSE OF THE WESTERN TIP OF CUBA ABOUT 275 MI...445 KM SE OF COZUMEL MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 0 MPH...0 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Mexico has issued a Hurricane Watch for the Yucatan Peninsula from Tulum to Rio Lagartos, including Cozumel. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Tulum to Rio Lagartos Mexico * Cozumel A Tropical Storm Warning is in effect for... * Pinar del Rio Cuba 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 within 36 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM EDT (1200 UTC), the center of Tropical Storm Zeta was located by a NOAA Hurricane Hunter aircraft near latitude 17.8 North, longitude 83.8 West. Zeta is nearly stationary, but a slow generally northwestward motion is expected later today. A turn toward the west-northwest and an increase in forward speed are forecast by Monday, followed by a faster northwestward motion on Tuesday. On the forecast track, the center of Zeta will pass south of western Cuba early Monday and move near or over the northern Yucatan Peninsula or the Yucatan Channel late Monday, move into the southern Gulf of Mexico on Tuesday, and reach the central Gulf of Mexico by late Tuesday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Gradual strengthening is expected during the next 48 to 72 hours, and Zeta is forecast to become a hurricane by late Monday or early Tuesday. Tropical-storm-force winds extend outward up to 80 miles (130 km), mainly southeast of the center. The minimum central pressure reported by the Hurricane Hunters is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Zeta can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. RAINFALL: Heavy rainfall bands will be expansive along and east-northeast of Zetas track. Across portions of central and western Cuba, the Cayman Islands, Jamaica, the northeast Yucatan peninsula of Mexico, Southern Florida and the Keys, storm total rainfall of 4 to 8 inches with local amounts of 12 inches are possible through Wednesday. By Wednesday, heavy rainfall associated with Zeta will begin to affect the central Gulf Coast region, which may lead to flash flooding in urban areas. WIND: Hurricane conditions are possible within the Hurricane Watch area in the Yucatan Peninsula by late Monday. Tropical storm conditions are expected within the warning area in Cuba by Monday morning. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Pasch
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Tropical Storm Zeta Graphics
2020-10-25 10:03:20| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sun, 25 Oct 2020 09:03:20 GMT Wind Speed Probabilities last updated Sun, 25 Oct 2020 09:03:20 GMT
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Tropical Storm Zeta Forecast Discussion Number 3
2020-10-25 10:01:08| National Hurricane Center (Atlantic)
Issued at 500 AM EDT Sun Oct 25 2020 000 WTNT43 KNHC 250900 TCDAT3 Tropical Storm Zeta Discussion Number 3 NWS National Hurricane Center Miami FL AL282020 500 AM EDT Sun Oct 25 2020 Earlier this morning, the tropical cyclone located over the northwestern Caribbean Sea was upgraded to Tropical Storm Zeta at 0600 UTC based on 0314Z ASCAT surface wind data of 32-33 kt located southeast of the broad center. Since then, a NOAA reconnaissance aircraft has been investigating Zeta and has found maximum 925-mb flight-level winds of about 40 kt and reliable SFMR surface winds of 33-36 kt. Recent satellite classifications from TAFB, SAB, and UW-CIMSS are 35 kt. Based on these data, the initial intensity is set at 35 kt. The initial motion estimate is stationary. Although Zeta has been steadily losing latitude during the past 12 hours, this has been primarily due to the broad low-level center reforming closer to the very intense convection located in the southern semicircle of the cyclone's large circulation. Satellite trends over the past 6 hours indicate that a mid-level circulation located about 90 nmi east of the low-level center is likely imparting a weak southerly component of motion on Zeta as well. Over the course of the next 72 hours, a weak shortwave trough currently located over the southeastern U.S. from the Tennessee Valley southward into the north-central Gulf of Mexico will continue to move eastward, allowing a low- to mid-level ridge to steadily build westward across the Bahamas, Florida, and the central Gulf of Mexico. This will gradually force Zeta on a northwestward track across or near the northeastern tip of the Yucatan Peninsula in about 48 h and into the central Gulf of Mexico by 72 h. The latest NHC model guidance is in very agreement on this developing 3-day track scenario. Thereafter, however, the models diverge fairly significantly due to uncertainty in the evolution of the next steering mechanism -- a trough over the northwestern U.S. that will dig southward and phase up/merge with a trough off the southern California and Baja California coasts. Phasing of northern and southern stream systems is always difficult to forecast, especially when one of those systems is outside the U.S. upper-air observing system like the system currently is off southern California. After the two systems phase in about 48 hours, a powerful mid/upper-level low is forecast to form by 72 h and eject eastward out of the southwestern U.S., causing the ridge over the Gulf of Mexico to erode eastward. This will allow Zeta to turn northward and then northeastward toward the north-central Gulf coast. The global models remain in poor agreement on the details of the timing of the eastward movement of the upper-low, resulting in model solutions ranging from Louisiana (ECMWF-UKMET-FSSE) to the Florida Panhandle (HWRF-HMON). The new NHC track forecast is a little left of the previous advisory track through 72 hours, and lies near the middle of the guidance envelope, close to the HCCA and TVCA multi-model consensus. However, given the current lack of motion of the system and the large model spread late in the period, the details of the track forecast are more uncertain than usual. Although the low- and mid-level circulations remain unaligned, the overall environment for the next 60-72 hours is expected to remain conducive for at least gradual intensification. After 72 hours, however, the deep-layer vertical wind shear is expected to increase while Zeta moves over cooler SSTs near the northern Gulf Coast, which should result in weakening before the cyclone moves inland. The new NHC intensity forecast is a tad higher than the previous advisory, and lies near the upper end of the intensity guidance. While the current NHC forecast indicates that the system should weaken below hurricane strength before landfall, users are reminded that strong tropical storms can still produce significant storm surge, rainfall, and wind impacts along the northern Gulf Coast. The cyclone should be absorbed into a frontal system by the end of the forecast period. KEY MESSAGES: 1. Zeta is expected to produce tropical storm conditions over extreme western Cuba on Monday. Tropical storm conditions are possible in the northern Yucatan Peninsula of Mexico Monday night and early Tuesday. 2. Through Wednesday, heavy rainfall is expected from Tropical Storm Zeta across portions of central and western Cuba, the Cayman Islands, Jamaica, the northeast Yucatan peninsula of Mexico, Southern Florida and the Keys. This rainfall may lead to flash flooding in urban areas. 3. Zeta is forecast to approach the northern Gulf Coast as a tropical storm Tuesday night and Wednesday, and could bring storm surge, rainfall, and wind impacts to areas from Louisiana to the Florida Panhandle. Residents in these areas should monitor the progress of Zeta and updates to the forecast. FORECAST POSITIONS AND MAX WINDS INIT 25/0900Z 17.7N 83.5W 35 KT 40 MPH 12H 25/1800Z 18.2N 83.8W 40 KT 45 MPH 24H 26/0600Z 18.9N 84.4W 45 KT 50 MPH 36H 26/1800Z 19.8N 85.7W 55 KT 65 MPH 48H 27/0600Z 21.1N 87.4W 65 KT 75 MPH 60H 27/1800Z 22.9N 89.5W 70 KT 80 MPH 72H 28/0600Z 25.4N 90.7W 65 KT 75 MPH 96H 29/0600Z 32.0N 89.1W 35 KT 40 MPH...INLAND 120H 30/0600Z...DISSIPATED $$ Forecaster Stewart
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Summary for Tropical Storm Zeta (AT3/AL282020)
2020-10-25 09:46:04| National Hurricane Center (Atlantic)
...ZETA MEANDERING OVER THE NORTHWESTERN CARIBBEAN SEA... ...EXPECTED TO PRODUCE HEAVY RAINFALL AND TROPICAL-STORM-FORCE WINDS ACROSS PORTIONS OF THE NORTHWESTERN CARIBBEAN... As of 5:00 AM EDT Sun Oct 25 the center of Zeta was located near 17.7, -83.5 with movement N at 1 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.
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Tropical Storm Zeta Wind Speed Probabilities Number 3
2020-10-25 09:46:04| National Hurricane Center (Atlantic)
Issued at 0900 UTC SUN OCT 25 2020 000 FONT13 KNHC 250845 PWSAT3 TROPICAL STORM ZETA WIND SPEED PROBABILITIES NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL AL282020 0900 UTC SUN OCT 25 2020 AT 0900Z THE CENTER OF TROPICAL STORM ZETA WAS LOCATED NEAR LATITUDE 17.7 NORTH...LONGITUDE 83.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 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 06Z SUN 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 06Z SUN 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU PERIODS TO TO TO TO TO TO TO 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU 06Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT TALLAHASSEE FL 34 X X( X) X( X) X( X) X( X) 4( 4) X( 4) ST MARKS FL 34 X X( X) X( X) X( X) X( X) 4( 4) X( 4) APALACHICOLA 34 X X( X) X( X) X( X) 1( 1) 8( 9) X( 9) GFMX 290N 850W 34 X X( X) X( X) X( X) 1( 1) 8( 9) X( 9) PANAMA CITY FL 34 X X( X) X( X) X( X) 1( 1) 12(13) X(13) DESTIN EXEC AP 34 X X( X) X( X) X( X) X( X) 14(14) X(14) COLUMBUS GA 34 X X( X) X( X) X( X) X( X) 4( 4) X( 4) BIRMINGHAM AL 34 X X( X) X( X) X( X) X( X) 8( 8) X( 8) MONTGOMERY AL 34 X X( X) X( X) X( X) X( X) 9( 9) X( 9) WHITING FLD FL 34 X X( X) X( X) X( X) X( X) 16(16) X(16) WHITING FLD FL 50 X X( X) X( X) X( X) X( X) 3( 3) X( 3) PENSACOLA FL 34 X X( X) X( X) X( X) X( X) 18(18) X(18) PENSACOLA FL 50 X X( X) X( X) X( X) X( X) 3( 3) X( 3) GFMX 290N 870W 34 X X( X) X( X) X( X) 4( 4) 20(24) X(24) GFMX 290N 870W 50 X X( X) X( X) X( X) X( X) 6( 6) X( 6) GFMX 290N 870W 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) MOBILE AL 34 X X( X) X( X) X( X) 1( 1) 25(26) X(26) MOBILE AL 50 X X( X) X( X) X( X) X( X) 5( 5) X( 5) GULFPORT MS 34 X X( X) X( X) X( X) 1( 1) 29(30) X(30) GULFPORT MS 50 X X( X) X( X) X( X) X( X) 7( 7) X( 7) GULFPORT MS 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) STENNIS MS 34 X X( X) X( X) X( X) 1( 1) 28(29) X(29) STENNIS MS 50 X X( X) X( X) X( X) X( X) 8( 8) X( 8) STENNIS MS 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) BURAS LA 34 X X( X) X( X) X( X) 2( 2) 32(34) X(34) BURAS LA 50 X X( X) X( X) X( X) X( X) 10(10) X(10) BURAS LA 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) GFMX 280N 890W 34 X X( X) X( X) X( X) 15(15) 32(47) X(47) GFMX 280N 890W 50 X X( X) X( X) X( X) 3( 3) 15(18) X(18) GFMX 280N 890W 64 X X( X) X( X) X( X) 1( 1) 5( 6) X( 6) JACKSON MS 34 X X( X) X( X) X( X) 1( 1) 15(16) X(16) JACKSON MS 50 X X( X) X( X) X( X) X( X) 3( 3) X( 3) NEW ORLEANS LA 34 X X( X) X( X) X( X) 2( 2) 27(29) X(29) NEW ORLEANS LA 50 X X( X) X( X) X( X) X( X) 8( 8) X( 8) NEW ORLEANS LA 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) GFMX 280N 910W 34 X X( X) X( X) X( X) 21(21) 26(47) X(47) GFMX 280N 910W 50 X X( X) X( X) X( X) 5( 5) 13(18) X(18) GFMX 280N 910W 64 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) BATON ROUGE LA 34 X X( X) X( X) X( X) 2( 2) 20(22) X(22) BATON ROUGE LA 50 X X( X) X( X) X( X) X( X) 6( 6) X( 6) BATON ROUGE LA 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) MORGAN CITY LA 34 X X( X) X( X) X( X) 3( 3) 23(26) X(26) MORGAN CITY LA 50 X X( X) X( X) X( X) X( X) 7( 7) X( 7) MORGAN CITY LA 64 X X( X) X( X) X( X) X( X) 2( 2) X( 2) ALEXANDRIA LA 34 X X( X) X( X) X( X) 1( 1) 9(10) X(10) LAFAYETTE LA 34 X X( X) X( X) X( X) 3( 3) 14(17) X(17) LAFAYETTE LA 50 X X( X) X( X) X( X) X( X) 5( 5) X( 5) LAFAYETTE LA 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) NEW IBERIA LA 34 X X( X) X( X) X( X) 3( 3) 17(20) X(20) NEW IBERIA LA 50 X X( X) X( X) X( X) X( X) 5( 5) X( 5) NEW IBERIA LA 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) GFMX 280N 930W 34 X X( X) X( X) X( X) 12(12) 8(20) X(20) GFMX 280N 930W 50 X X( X) X( X) X( X) 3( 3) 4( 7) X( 7) GFMX 280N 930W 64 X X( X) X( X) X( X) 1( 1) 1( 2) X( 2) SHREVEPORT LA 34 X X( X) X( X) X( X) X( X) 3( 3) X( 3) FORT POLK LA 34 X X( X) X( X) X( X) 1( 1) 6( 7) X( 7) LAKE CHARLES 34 X X( X) X( X) X( X) 2( 2) 8(10) X(10) CAMERON LA 34 X X( X) X( X) X( X) 4( 4) 8(12) X(12) CAMERON LA 50 X X( X) X( X) X( X) 1( 1) 2( 3) X( 3) JASPER TX 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) KOUNTZE TX 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) PORT ARTHUR TX 34 X X( X) X( X) X( X) 1( 1) 5( 6) X( 6) GALVESTON TX 34 X X( X) X( X) X( X) 2( 2) 3( 5) X( 5) FREEPORT TX 34 X X( X) X( X) X( X) 1( 1) 2( 3) X( 3) GFMX 280N 950W 34 X X( X) X( X) X( X) 3( 3) 3( 6) X( 6) HIGH ISLAND TX 34 X X( X) X( X) X( X) 1( 1) 4( 5) X( 5) MATAGORDA TX 34 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) GFMX 270N 960W 34 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) GFMX 250N 960W 34 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) MERIDA MX 34 X X( X) X( X) 7( 7) 11(18) 1(19) X(19) MERIDA MX 50 X X( X) X( X) 1( 1) 5( 6) X( 6) X( 6) MERIDA MX 64 X X( X) X( X) X( X) 1( 1) X( 1) X( 1) COZUMEL MX 34 X 1( 1) 20(21) 35(56) 6(62) X(62) X(62) COZUMEL MX 50 X X( X) 4( 4) 20(24) 3(27) X(27) X(27) COZUMEL MX 64 X X( X) 1( 1) 6( 7) 1( 8) X( 8) X( 8) BELIZE CITY 34 X X( X) 1( 1) 2( 3) X( 3) X( 3) X( 3) GUANAJA 34 X 1( 1) 1( 2) 1( 3) X( 3) X( 3) X( 3) CP SAN ANTONIO 34 X 1( 1) 5( 6) 8(14) 4(18) X(18) X(18) HAVANA 34 X 1( 1) 1( 2) 2( 4) X( 4) X( 4) X( 4) ISLE OF PINES 34 X 1( 1) 2( 3) 1( 4) 1( 5) X( 5) X( 5) GRAND CAYMAN 34 X 1( 1) 1( 2) 1( 3) X( 3) X( 3) X( 3) PENSACOLA NAS 34 X X( X) X( X) X( X) 2( 2) 22(24) X(24) PENSACOLA NAS 50 X X( X) X( X) X( X) X( X) 6( 6) X( 6) PENSACOLA NAS 64 X X( X) X( X) X( X) X( X) 1( 1) X( 1) KEESLER AB 34 X X( X) X( X) X( X) 3( 3) 32(35) X(35) KEESLER AB 50 X X( X) X( X) X( X) X( X) 10(10) X(10) KEESLER AB 64 X X( X) X( X) X( X) X( X) 3( 3) X( 3) $$ FORECASTER STEWART
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