Spot Forecast
Issued by NWS
Issued by NWS
981 FNUS72 KNHC 251014 FWSNHC SPOT FORECAST FOR Guantanamo Bay...USCG NWS NATIONAL HURRICANE CENTER MIAMI FL 1100 EDT Wed Sep 25 2024 Forecast is based on forecast start time of 0700 EDT on September 25. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NWS NATIONAL HURRICANE CENTER/TROPICAL ANALYSIS AND FORECAST BRANCH AT (305)229-4425. .DISCUSSION...A weak surface trough N of the area is helping to stream in some layered clouds with isolated showers and thunderstorms. There are scattered cloud decks in between 2,500 and 5,000 ft with occasional broken cloud layer decks at 5,000 ft. In addition to the weak surface trough, a mid and upper level trough extending southward through the Bahamas may aide in diurnal thunderstorm activity that peaks late this afternoon and evening. By Thursday, moisture from Tropical Storm Helene, which will pass well W of the area over far western Cuba, will increase, leading to more isolated showers and thunderstorms. 25/09Z-25/18Z: SCT025 SCT050. OCNL BKN050 LYRD TOPS ABV FL240. ISOL SHRA/TSRA. 26/09Z-26/18Z: SCT025 SCT050. SCT025 BKN050. LYRD TOPS ABV FL240. WDLY SCT SHRA/ISOL TSRA. Latitude = 20.0641 Longitude = -73.7058 .REST OF TODAY... TIME (EDT) 7 AM 10 AM 1 PM 4 PM Sky (%).........100 89 89 98 Weather cov.....SCTTRD SCTTRD SCTTRD SCTTRD Weather type....RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ISOLTD ISOLTD ISOLTD ISOLTD Temp............85 85 85 85 SFC wind (kts)..E 3G5 E 5G8 E 6G9 E 4G7 Swell hgt (ft)..E 1 E 1 E 1 E 1 Wave period (s).9 9 9 9 Wind wave (ft)..1 2 2 1 Wave height (ft)1 1 1 1 SST (F).........87 87 87 87 .TONIGHT... TIME (EDT) 6 PM 9 PM MIDNGT 3 AM Sky (%).........98 92 92 78 Weather cov..... Weather type....NONE NONE NONE NONE Tstm cov........ Temp............87 83 83 81 SFC wind (kts)..S 5G6 S 3G4 E 3G4 E 6G7 Swell hgt (ft)..E 2 E 3 E 3 SE 3 Wave period (s).6 6 6 6 Wind wave (ft)..2 1 1 2 Wave height (ft)2 2 2 2 SST (F).........87 87 87 87 .THURSDAY... TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........78 91 91 35 Weather cov.....SCTTRD SCTTRD SCTTRD SCTTRD Weather type....RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ISOLTD ISOLTD ISOLTD ISOLTD Temp............81 85 85 87 SFC wind (kts)..E 6G7 SE 5G6 SE 7G9 S 7G9 Swell hgt (ft)..SE 3 S 3 S 3 W 3 Wave period (s).6 7 7 7 Wind wave (ft)..2 2 2 2 Wave height (ft)2 2 2 2 SST (F).........87 87 87 87 $$ Forecaster...KONARIK Requested by...LT Paul Grotelueschen Type of request...MARINE .TAG 2422902.1/NHC .DELDT 09/25/24 .FormatterVersion 2.0.0 .EMAIL paul.c.grotelueschen@uscg.mil