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Tropical Depression Nine-E Public Advisory Number 8
2021-08-04 22:31:41| National Hurricane Center (East Pacific)
Issued at 1100 AM HST Wed Aug 04 2021 919 WTPZ34 KNHC 042031 TCPEP4 BULLETIN Tropical Depression Nine-E Advisory Number 8 NWS National Hurricane Center Miami FL EP092021 1100 AM HST Wed Aug 04 2021 ...DEPRESSION REGENERATES OVER THE SOUTHWESTERN PART OF THE BASIN... ...COULD BECOME A SHORT-LIVED TROPICAL STORM... SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION ----------------------------------------------- LOCATION...14.9N 135.7W ABOUT 1770 MI...2850 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NNW OR 335 DEGREES AT 7 MPH...11 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 1100 AM HST (2100 UTC), the center of Tropical Depression Nine-E was located near latitude 14.9 North, longitude 135.7 West. The depression is moving toward the north-northwest near 7 mph (11 km/h). This general motion is expected today, followed by a turn toward the northwest on Thursday and that northwestward motion continuing through Saturday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. The depression could become a tropical storm today or tomorrow before weakening begins late Thursday. The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 PM HST. $$ Forecaster Blake
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Tropical Depression Nine-E Forecast Advisory Number 8
2021-08-04 22:31:15| National Hurricane Center (East Pacific)
Issued at 2100 UTC WED AUG 04 2021 000 WTPZ24 KNHC 042031 TCMEP4 TROPICAL DEPRESSION NINE-E FORECAST/ADVISORY NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092021 2100 UTC WED AUG 04 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 14.9N 135.7W AT 04/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 335 DEGREES AT 6 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 12 FT SEAS.. 60NE 45SE 30SW 45NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 14.9N 135.7W AT 04/2100Z AT 04/1800Z CENTER WAS LOCATED NEAR 14.6N 135.6W FORECAST VALID 05/0600Z 15.6N 136.1W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 40NW. FORECAST VALID 05/1800Z 16.5N 136.8W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 40SE 0SW 40NW. FORECAST VALID 06/0600Z 17.4N 138.0W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 40NW. FORECAST VALID 06/1800Z 18.4N 139.4W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 07/0600Z 19.5N 141.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 07/1800Z 20.5N 142.5W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 08/1800Z 21.5N 146.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 09/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.9N 135.7W NEXT ADVISORY AT 05/0300Z $$ FORECASTER BLAKE
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Post-Tropical Cyclone Nine-E Graphics
2021-08-01 10:39:38| National Hurricane Center (East Pacific)
5-Day Uncertainty Track last updated Sun, 01 Aug 2021 08:39:38 GMT Wind Speed Probabilities last updated Sun, 01 Aug 2021 08:39:38 GMT
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Post-Tropical Cyclone Nine-E Forecast Discussion Number 7
2021-08-01 10:39:01| National Hurricane Center (East Pacific)
Issued at 1100 PM HST Sat Jul 31 2021 000 WTPZ44 KNHC 010838 TCDEP4 Post-Tropical Cyclone Nine-E Discussion Number 7 NWS National Hurricane Center Miami FL EP092021 1100 PM HST Sat Jul 31 2021 The depression has remained poorly organized for more than 24 hours and has produced a very limited amount of convection during that time. As a result of the lack of organized deep convection over the past day, the system no longer meets the definition of a tropical cyclone, and it has degenerated into a remnant low. In addition, the original low-level swirl that was tracked over the past day or so appears to have been absorbed within the envelope of the broader low pressure area. The system's initial intensity is maintained at 25 kt, but this could be generous. The depression has been plagued by shear and dry air entrainment, and those conditions are expected to persist for at least the next couple of days. If the system is able to survive past 72 hours, there is some chance of redevelopment when the shear decreases later in the period. However, given the uncertainty surrounding the potential interaction with Hurricane Hilda located to the cyclone's northeast, the official forecast calls for the system to remain a remnant low, and this will be the final NHC advisory on this system unless regeneration occurs. The cyclone has been nearly stationary overnight, but it is forecast to begin a slow westward to west-northwestward motion later today, and that motion should continue for the next few days. After that time, possible interaction with Hilda increases the track forecast uncertainty, but since the majority of the dynamical models keep the low on a west-northwestward heading, so does the NHC forecast. Future information on the remnant low can be found in High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php Information on potential regeneration will be available in the Tropical Weather Outlook as needed. FORECAST POSITIONS AND MAX WINDS INIT 01/0900Z 11.4N 127.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 12H 01/1800Z 11.8N 128.3W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 02/0600Z 12.0N 129.9W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 02/1800Z 12.3N 131.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 03/0600Z 12.7N 132.9W 25 KT 30 MPH...POST-TROP/REMNT LOW 60H 03/1800Z 13.1N 134.2W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 04/0600Z 13.5N 135.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 05/0600Z 14.5N 137.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 06/0600Z 15.5N 140.5W 25 KT 30 MPH...POST-TROP/REMNT LOW $$ Forecaster Brown
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Summary for Post-Tropical Cyclone Nine-E (EP4/EP092021)
2021-08-01 10:38:31| National Hurricane Center (East Pacific)
...DEPRESSION DEGENERATES INTO A REMNANT LOW... As of 11:00 PM HST Sat Jul 31 the center of Nine-E was located near 11.4, -127.5 with movement Stationary. The minimum central pressure was 1008 mb with maximum sustained winds of about 30 mph.
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