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Tropical Depression Fifteen-E Public Advisory Number 1
2021-09-07 22:40:19| National Hurricane Center (East Pacific)
Issued at 300 PM MDT Tue Sep 07 2021 000 WTPZ35 KNHC 072040 TCPEP5 BULLETIN Tropical Depression Fifteen-E Advisory Number 1 NWS National Hurricane Center Miami FL EP152021 300 PM MDT Tue Sep 07 2021 ...NEW TROPICAL DEPRESSION FORMS OFFSHORE OF SOUTHWESTERN MEXICO... ...EXPECTED TO BECOME A TROPICAL STORM TONIGHT... SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...18.2N 107.9W ABOUT 240 MI...390 KM WSW OF MANZANILLO MEXICO ABOUT 350 MI...560 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 5 MPH...7 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 300 PM MDT (2100 UTC), the center of Tropical Depression Fifteen-E was located near latitude 18.2 North, longitude 107.9 West. The depression is moving toward the west-northwest near 5 mph (7 km/h). A turn to the northwest is expected by tonight, and this motion along with a gradual increase in forward speed is expected through Thursday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Strengthening is expected over the next couple of days, and the depression is forecast to become a tropical storm tonight, and a hurricane on Thursday. The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Outer rainbands from the depression are likely to produce locally heavy rainfall and gusty winds along the coast of the Mexican states of Colima and Jalisco through tonight. SURF: The strengthening cyclone is expected to generate swells that will affect the portions of the southern Baja California peninsula by Thursday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 900 PM MDT. $$ Forecaster Latto
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Tropical Depression Fifteen-E Forecast Advisory Number 1
2021-09-07 22:40:19| National Hurricane Center (East Pacific)
Issued at 2100 UTC TUE SEP 07 2021 000 WTPZ25 KNHC 072040 TCMEP5 TROPICAL DEPRESSION FIFTEEN-E FORECAST/ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP152021 2100 UTC TUE SEP 07 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 18.2N 107.9W AT 07/2100Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 4 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 18.2N 107.9W AT 07/2100Z AT 07/1800Z CENTER WAS LOCATED NEAR 18.1N 107.8W FORECAST VALID 08/0600Z 18.4N 108.1W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 50NE 40SE 0SW 0NW. FORECAST VALID 08/1800Z 19.0N 108.6W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 50SE 0SW 40NW. FORECAST VALID 09/0600Z 20.0N 109.3W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 20NE 0SE 0SW 0NW. 34 KT... 70NE 50SE 40SW 50NW. FORECAST VALID 09/1800Z 21.1N 110.5W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 0SE 0SW 0NW. 50 KT... 30NE 20SE 0SW 0NW. 34 KT... 80NE 50SE 40SW 60NW. FORECAST VALID 10/0600Z 22.4N 112.0W MAX WIND 65 KT...GUSTS 80 KT. 50 KT... 30NE 20SE 0SW 30NW. 34 KT... 80NE 50SE 40SW 60NW. FORECAST VALID 10/1800Z 23.4N 113.7W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 20SE 0SW 30NW. 34 KT... 70NE 60SE 50SW 60NW. 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 11/1800Z 24.5N 116.5W MAX WIND 40 KT...GUSTS 50 KT. OUTLOOK VALID 12/1800Z 24.5N 118.9W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.2N 107.9W NEXT ADVISORY AT 08/0300Z $$ FORECASTER LATTO
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Tropical Depression Kate Forecast Discussion Number 18
2021-09-01 17:00:05| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Wed Sep 01 2021 448 WTNT45 KNHC 011459 TCDAT5 Tropical Depression Kate Discussion Number 18 NWS National Hurricane Center Miami FL AL102021 1100 AM AST Wed Sep 01 2021 It has been difficult to pinpoint where the low-level circulation of Kate is this morning. After last night's diurnal convective maximum, the remaining convection has taken on a very disorganized structure, with a mid-level vortex being left behind to the south, while deeper, but more outflow driven convection is racing off to the north, ahead of the estimated low-level center position. A recently received 1211 UTC ASCAT-A pass indicated that Kate's low-level circulation is still closed, but just barely. The scatterometer wind data supports maintaining the current intensity at 30-kt, which also agrees with the latest subjective and objective Dvorak estimates. The estimated motion is continuing off to the north-northwest, at 340/9 kt. Kate appears to now be primarily steered by the low-level flow around a subtropical ridge located to its east. A general north-northwest motion is expected to continue today, followed by a turn to the north and north-northeast around the periphery of this ridge. The latest NHC track guidance has been adjusted a bit right of the previous track, shifting towards the latest consensus guidance (TVCN) that can still track the cyclone beyond 24 hours. A 0958 UTC SSMIS microwave pass suggested that the better organized structure observed last night has decayed, with the low- and mid-level centers quite misaligned. Vertical wind shear diagnosed by SHIPS is now between 15-20 kt out of the north. This shear is likely contributing to the vortex tilt, while also helping to import very dry mid-level air, preventing Kate's convective activity from organizing. The bulk of the intensity guidance is in agreement that gradual spin down of the low-level circulation will occur over the next several days, with the deterministic ECMWF model suggesting Kate could open up to a trough as soon as tomorrow. The latest NHC intensity forecast makes Kate a remnant low in 36 hours, with dissipation after 48 hours. However, given the current structure, this could occur sooner than forecast. FORECAST POSITIONS AND MAX WINDS INIT 01/1500Z 26.8N 52.3W 30 KT 35 MPH 12H 02/0000Z 27.9N 52.7W 25 KT 30 MPH 24H 02/1200Z 29.6N 53.1W 25 KT 30 MPH 36H 03/0000Z 31.1N 53.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 03/1200Z 32.4N 52.5W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 04/0000Z...DISSIPATED $$ Forecaster Papin
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Tropical Depression Kate Graphics
2021-09-01 16:56:42| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 01 Sep 2021 14:56:42 GMT Wind Speed Probabilities last updated Wed, 01 Sep 2021 14:56:42 GMT
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Summary for Tropical Depression Kate (AT5/AL102021)
2021-09-01 16:56:03| National Hurricane Center (Atlantic)
...STRUGGLING KATE NOT EXPECTED TO LAST MUCH LONGER... As of 11:00 AM AST Wed Sep 1 the center of Kate was located near 26.8, -52.3 with movement NNW at 12 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.
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