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Summary for Tropical Depression Twenty-One-E (EP1/EP212020)
2020-11-18 03:36:38| National Hurricane Center (East Pacific)
...DEPRESSION CONTINUES WEST-NORTHWESTWARD OVER THE EASTERN TROPICAL PACIFIC... As of 8:00 PM MST Tue Nov 17 the center of Twenty-One-E was located near 15.5, -114.3 with movement WNW at 12 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.
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Tropical Depression Twenty-One-E Public Advisory Number 2
2020-11-18 03:36:38| National Hurricane Center (East Pacific)
Issued at 800 PM MST Tue Nov 17 2020 000 WTPZ31 KNHC 180236 TCPEP1 BULLETIN Tropical Depression Twenty-One-E Advisory Number 2 NWS National Hurricane Center Miami FL EP212020 800 PM MST Tue Nov 17 2020 ...DEPRESSION CONTINUES WEST-NORTHWESTWARD OVER THE EASTERN TROPICAL PACIFIC... SUMMARY OF 800 PM MST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...15.5N 114.3W ABOUT 585 MI...945 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 PM MST (0300 UTC), the center of Tropical Depression Twenty-One-E was located near latitude 15.5 North, longitude 114.3 West. The depression is moving toward the west-northwest near 12 mph (19 km/h), and this general motion is expected to continue during the next day or so, followed by a turn toward the west on Thursday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some slight strengthening is possible, and the depression could become a tropical storm later tonight or Wednesday. Weakening is expected to commence by Thursday morning, and the system is forecast to become a remnant low in a couple of days. The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 200 AM MST. $$ Forecaster Roberts
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Tropical Depression Twenty-One-E Wind Speed Probabilities Number 2
2020-11-18 03:36:38| National Hurricane Center (East Pacific)
Issued at 0300 UTC WED NOV 18 2020 000 FOPZ11 KNHC 180236 PWSEP1 TROPICAL DEPRESSION TWENTY-ONE-E WIND SPEED PROBABILITIES NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP212020 0300 UTC WED NOV 18 2020 AT 0300Z THE CENTER OF TROPICAL DEPRESSION TWENTY-ONE-E WAS LOCATED NEAR LATITUDE 15.5 NORTH...LONGITUDE 114.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC STANDARD TIME (PST)...SUBTRACT 8 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 00Z 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 00Z WED 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN PERIODS TO TO TO TO TO TO TO 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN 00Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT 15N 115W 34 11 1(12) X(12) X(12) X(12) X(12) X(12) 15N 120W 34 X 1( 1) 3( 4) 1( 5) X( 5) X( 5) X( 5) $$ FORECASTER ROBERTS
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Tropical Depression Twenty-One-E Forecast Advisory Number 2
2020-11-18 03:35:37| National Hurricane Center (East Pacific)
Issued at 0300 UTC WED NOV 18 2020 000 WTPZ21 KNHC 180235 TCMEP1 TROPICAL DEPRESSION TWENTY-ONE-E FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL EP212020 0300 UTC WED NOV 18 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 15.5N 114.3W AT 18/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 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 15.5N 114.3W AT 18/0300Z AT 18/0000Z CENTER WAS LOCATED NEAR 15.4N 113.8W FORECAST VALID 18/1200Z 15.9N 115.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 0SE 0SW 30NW. FORECAST VALID 19/0000Z 16.5N 118.0W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 0SE 0SW 30NW. FORECAST VALID 19/1200Z 16.9N 120.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 20/0000Z 17.3N 122.1W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 20/1200Z 17.3N 124.3W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 21/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.5N 114.3W NEXT ADVISORY AT 18/0900Z $$ FORECASTER ROBERTS
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Tropical Depression Twenty-One-E Forecast Discussion Number 1
2020-11-17 22:12:11| National Hurricane Center (East Pacific)
Issued at 200 PM MST Tue Nov 17 2020 000 WTPZ41 KNHC 172111 CCA TCDEP1 Tropical Depression Twenty-One-E Discussion Number 1...Corrected NWS National Hurricane Center Miami FL EP212020 200 PM MST Tue Nov 17 2020 Corrected Daylight Time to Standard time Visible satellite imagery and recent ASCAT data indicate that the circulation of the area of low pressure located well south-southwest of Baja California has become better defined today. The associated convective activity has also become organized in a band around the western and southwestern portions of the circulation. Therefore, the system is being classified as a tropical depression with winds of 30 kt, as indicated by the scatterometer data and a T2.0 (30 kt) Dvorak classification from TAFB. The depression is currently located over SSTs of around 28 deg C, and within a low shear environment. These conditions are conducive for strengthening, but the surrounding mid-level environment is fairly dry which is likely to limit intensification. Most of the intensity guidance calls for the system to become a short-lived tropical storm, and so does the official forecast. After 24 hours, increasing upper-level westerly winds, cooler SSTs, and even less favorable thermodynamic conditions should cause the cyclone to weaken. The system is likely to become a remnant low in about 48 hours, and the global models show it degenerating into a trough of low pressure in 60-72 hours, which is also indicated in the NHC forecast. The initial motion estimate is 285/11 kt. A mid-level ridge that extends westward from northern Mexico over the eastern Pacific should steer the system west-northwestward for the next couple of days. After that time, the cyclone is likely to turn more westward as it weakens and is steered by the low-level trade wind flow. The track guidance is in good agreement, and the NHC forecast is near the middle of the guidance envelope. FORECAST POSITIONS AND MAX WINDS INIT 17/2100Z 15.2N 113.3W 30 KT 35 MPH 12H 18/0600Z 15.6N 114.9W 35 KT 40 MPH 24H 18/1800Z 16.2N 117.0W 35 KT 40 MPH 36H 19/0600Z 16.7N 119.1W 30 KT 35 MPH 48H 19/1800Z 17.1N 121.1W 25 KT 30 MPH...POST-TROP/REMNT LOW 60H 20/0600Z 17.2N 123.3W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 20/1800Z...DISSIPATED $$ Forecaster Brown
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