490 FNUS71 KPBZ 061201 FWSPBZ Spot Forecast for SGL095 2-6...PGC National Weather Service Pittsburgh PA 701 AM EST Tue Feb 6 2024 Forecast is based on ignition time of 0700 EST on February 06. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... High pressure will maintain dry conditions and sunny skies today. Have just recently lowered forecast dewpoints for this afternoon after seeing preliminary 12Z balloon data, which shows a significant dry layer aloft. As mixing heights increase expect to see RH values to drop to the low 30s by early afternoon. Much depends on the mixing heights. I have min RH values just to the south in Allegheny county in the mid to upper 20s...just something to be aware of. At least winds will be relatively light. Any questions, give us a call. .TODAY... Sky/weather.........Sunny (0-10 percent). Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 45. Min humidity........33 percent. Wind (20 ft)........Light winds becoming northeast 5 to 6 mph early in the morning, then becoming light late in the afternoon. Mixing height.......2900 ft AGL. Transport winds.....Northeast 7 to 12 mph. Haines Index........4...or low potential for large plume dominated fire growth. TIME (EST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........0 0 0 0 0 0 2 2 2 5 6 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 Temp............21 23 27 31 35 39 41 42 43 43 41 RH..............91 80 66 57 47 39 35 34 33 34 38 20 FT wind dir..NE NE NE NE NE NE NE NE NE NE NE 20 FT wind spd..4 5 5 6 6 5 5 5 5 5 4 20 FT wind gust.8 8 10 10 10 8 8 7 6 6 6 Mix hgt (kft)...0.6 0.6 1.1 1.4 1.8 2.2 2.6 2.9 2.8 2.7 1.2 Transp wind dir.E E E E E NE NE NE NE NE E Transp wind spd.10 10 12 10 10 9 10 9 9 8 7 Haines index....4 4 4 4 4 4 4 4 4 4 4 .TONIGHT... Sky/weather.........Mostly clear (15-25 percent). Chance of pcpn......0 percent. LAL.................1. Min temperature.....Around 23. Max humidity........79 percent. Wind (20 ft)........Light winds. Mixing height.......300 ft AGL. Transport winds.....East 6 to 8 mph shifting to the southeast around 5 mph early in the morning. Haines Index........4 to 5...or low to moderate potential for large plume dominated fire growth. TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........6 5 4 5 4 13 29 24 24 18 26 35 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............38 33 31 31 29 28 28 27 26 25 25 24 RH..............44 55 59 63 68 71 67 70 72 75 76 79 20 FT wind dir..NE NE NE E E E E E E E E E 20 FT wind spd..3 3 3 3 3 3 3 3 3 2 2 2 20 FT wind gust.5 4 4 4 4 4 4 5 5 4 4 4 Mix hgt (kft)...0.5 0.4 0.4 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Transp wind dir.NE E NE E E E E E E E E SE Transp wind spd.6 7 6 7 7 6 6 8 7 7 6 5 Haines index....4 4 4 4 4 4 4 5 5 5 5 5 .WEDNESDAY... Sky/weather.........Sunny (20-30 percent). Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 50. Min humidity........39 percent. Wind (20 ft)........Light winds. Mixing height.......2300 ft AGL. Transport winds.....Southeast 3 to 6 mph. Haines Index........5...or moderate potential for large plume dominated fire growth. TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........28 37 15 7 6 6 16 24 28 32 38 41 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............25 25 27 31 36 40 43 47 47 47 48 45 RH..............78 79 75 65 55 47 42 39 40 40 40 44 20 FT wind dir..E E E E E SE SE SE SE SE S SE 20 FT wind spd..2 3 3 2 3 3 3 3 2 2 2 2 20 FT wind gust.4 4 4 4 4 Mix hgt (kft)...0.3 0.3 0.3 0.7 1.0 1.5 1.8 2.2 2.3 2.1 1.7 1.2 Transp wind dir.E SE E E SE SE SE S SE S S S Transp wind spd.5 6 6 5 3 3 3 3 3 3 3 3 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 $$ Forecaster...MPK Requested by...Robert Hall Type of request...PRESCRIBED .TAG 2402420.0/PBZ .DELDT 02/06/24 .FormatterVersion 2.0.0 .EMAIL robehall@pa.gov