TD04/06 (2146)
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Subtropical Depression Six | |
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Subtropical depression | |
As of: | 2200 HPT June 18, 2146 |
Location: | 20.4°N 41.3°E 1095 km (685 miles) south of Atollville, West Kompa Ru |
Maximum winds: |
45 km/h (30 mph) (1-minute sustained) |
Pressure: | 1008 hPa |
Movement: | North at 17 km/h |
Past advisories and discussions available here |
TCAD1 WHCO 190940 CCA SUBTROPICAL DEPRESSION SIX ADVISORY 3 HEARTLAND HURRICANE PREDICTION CENTRE OREAN 9 AM HPT JUNE 19 2146 ...CORRECTED TO ADD 'INLAND' NOTE TO FORECAST POINT... ...NO SIGNIFICANT CHANGE IN ORGANISATION OF DEPRESSION... NOT MUCH TO SAY. NO CHANGE MADE TO INTENSITY SINCE THERE IS NO DATA TO JUSTIFY ANY INCREASE TO 30 KNOTS. A HEARTLAND WEATHER SERVICE PLANE WILL SOON BE IN TO INVESTIGATE THE SYSTEM. INITIAL MOTION SLIGHTLY FASTER... 360/10. INTERESTS IN THE MAUVIDIAN SEA...INCLUDING WEST KOMPA RU...SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. REFER TO PRODUCTS FROM YOUR LOCAL WEATHER OFFICE FOR MORE INFORMATION... INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS. AT 9 AM HPT...THE POORLY-DEFINED CENTRE OF SUBTROPICAL DEPRESSION SIX WAS ESTIMATED TO BE LOCATED NEAR LATITUDE 21.2 NORTH LONGITUDE 41.2 EAST ...ABOUT 905 KM...565 MILES...SOUTH OF ATOLLVILLE. SUBTROPICAL DEPRESSION SIX IS CURRENTLY MOVING NORTHWARDS AT A STEADY PACE OF ABOUT 19 KM/H...12 MPH. THE DEPRESSION WILL GAIN FORWARD SPEED OVER THE NEXT 24 HOURS. MAXIMUM SUSTAINED WINDS ARE NEAR 45 KM/H...30 MPH...WITH HIGHER GUSTS. MUCH OF THE STRONG GUSTS WILL BE FELT WELL AWAY FROM THE CENTRE OF THIS STORM. SOME SLIGHT STRENGTHENING IS POSSIBLE IN THE NEXT 24 HOURS AS THE DEPRESSION GAINS TROPICALITY. THE MINIMUM CENTRAL PRESSURE IS ESTIMATED TO BE 1008 HPA...29.77 INCHES. CONVECTION REMAINS DISPLACED FROM THE CENTRE AND IT APPEARS THAT THE DEPRESSION MAY BE SUFFERING FROM SOME WIND SHEAR. THE LATEST MODEL SHEAR DIAGNOSTIC DID NOT SHOW ANYTHING TOO BAD...ABOUT 15 KNOTS OF VERTICAL SHEAR...SO IT IS QUITE THE QUESTION WHY THE DEPRESSION HAS NOT YET STRENGTHENED. SOME CONVECTION HAS BEEN TRYING TO FIRE AROUND THE CENTRE OVER THE PAST SIX TO TWELVE HOURS...BUT THE SHEAR IS NOT HELPING. AS THE CYCLONE CONTINUES TO MOVE NORTH IT SHOULD MOVE INTO AN AREA OF SLIGHTLY LESS SHEAR...WHICH SHOULD IMPROVE ITS CHANCES OF BECOMING TROPICAL...AS WELL AS STRENGTHENING SOME. BASED ON CONTINUITY...I AM NOT CHANGING THE INTENSITY FORECAST AT THIS TIME...BUT IF THE DEPRESSION CONTINUES TO REFUSE TO STRENGTHEN IT IS LIKELY THAT THE FORECAST WILL HAVE TO BE TRENDED DOWN. AN ADDITIONAL POINT TO NOTE...ON THIS FORECAST TRACK...IF THE INTENSITY FORECAST DOES NOT CHANGE...TROPICAL STORM WATCHES COULD BE NEEDED LATER TODAY FOR PARTS OF WEST KOMPA RU. OFFICIAL FORECAST...ALL TIMES HPT INITIAL TIME...19/0900H INITIAL... 21.2 N 41.2 E... 25 KT...SUBTROPICAL 19/2100H... 22.3 N 41.2 E... 30 KT...BECOMING TROPICAL 20/0900H... 23.4 N 41.3 E... 30 KT...TROPICAL 20/2100H... 24.4 N 41.5 E... 35 KT...EAST OF ATOLLVILLE 21/0900H... 25.3 N 41.9 E... 35 KT 22/0900H... 27.1 N 42.7 E... 20 KT...REMNANT LOW INLAND 23/0900H...DISSIPATED REPEATING THE 9 AM POSITION... NEAR 21.2 NORTH 41.2 EAST. MAXIMUM SUSTAINED WINDS NEAR 45 KM/H. MINIMUM CENTRAL PRESSURE 1008 HPA. SYSTEM IS MOVING NORTHWARDS AT NEAR 19 KM/H. THE HEARTLAND HURRICANE PREDICTION CENTRE WILL ISSUE THE NEXT ADVISORY BY 1535 HPT. FORECASTER NOLAN
TCTW01 FOLN 190940 TROPICAL CYCLONE TEXT WARNING LIVERPOOL ENGLAND MET SERVICE HEADQUARTERS FOLENISA ISSUED 9:40 AM HPT JUNE 19 2146 ACTIVE TIME: 0900H JUNE 19 2146 WARNING CENTRE: FOLENISA TROPICAL CYCLONE: SUB-TD SIX WARNING NR: 2 POSITION: 20.8N 41.2E ACCURACY: 50NM MOVEMENT: N 12KT CENT PRES: 1008HPA MAX WIND: 25KT MAX GUST: 35KT FCST 12HR PSTN: 22.3N 41.2E FCST 12HR WINDS: 30KT G40KT NEXT WARNING AT: 1500H JUNE 18 2146=