Suppression Forecast
Issued by NWS Wakefield, VA

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000 FNUS71 KAKQ 131357 FWSAKQ Spot Forecast for Piney Grove Preserve - Units 7/28...TNC National Weather Service Wakefield VA 957 AM EDT Tue Apr 13 2021 Forecast is based on ignition time of 1200 EDT on April 13. If conditions become unrepresentative...contact the National Weather Service at 757-899-5734. .DISCUSSION... Weak high pressure settles over the area this afternoon and evening. Another system will affect the area bringing a chance for showers and thunderstorms Wednesday and Wednesday night. .REST OF TODAY... Sky/weather.........Partly sunny (45-55 percent). Chance of pcpn......0 percent. Max temperature.....Around 67. Min humidity........50 percent. Wind (20 ft)........North winds 7 to 9 mph. Mixing height.......4200 ft AGL. Transport winds.....North 10 to 16 mph. Smoke dispersal.....Good (37900 knot-ft). LVORI...............1. ADI.................36. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (EDT) 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........58 57 55 53 50 46 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 Temp............62 64 65 66 66 66 RH..............60 56 54 52 50 50 20 FT wind dir..N N N N N N 20 FT wind spd..7 7 8 7 7 6 20 FT wind gust.11 11 13 11 11 10 Mix hgt (kft)...3.2 3.5 3.8 3.9 4.1 4.2 Transp wind dir.N N N N N N Transp wind spd.16 15 14 13 12 10 LVORI...........1 1 1 1 1 1 ADI.............40 38 36 34 32 40 Haines index....4 3 3 3 4 4 Vrate kt-ft/1K..45 45 43 42 41 38 Ventrate Cat....FR FR FR FR FR PR .TONIGHT... Sky/weather.........Partly cloudy (30-40 percent). Chance of pcpn......0 percent. Min temperature.....Around 48. Max humidity........89 percent. Wind (20 ft)........Northeast winds around 6 mph early in the evening becoming light. Mixing height.......300 ft AGL. Transport winds.....North around 8 mph shifting to the southeast. Smoke dispersal.....Fair (22500 knot-ft) early in the evening decreasing to poor (800 knot-ft) late in the night. LVORI...............4. ADI.................27 decreasing to 3. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........42 37 29 31 32 34 32 30 28 33 37 40 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............65 64 60 58 55 54 53 52 51 51 50 50 RH..............52 56 67 69 74 77 80 80 83 83 86 86 20 FT wind dir..NE E E E E SE SE SE S S S S 20 FT wind spd..6 4 3 3 2 2 2 2 2 2 3 3 20 FT wind gust.8 6 5 5 5 5 Mix hgt (kft)...3.2 2.2 1.2 0.9 0.6 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Transp wind dir.N NE E E E SE SE SE SE SE SE SE Transp wind spd.8 6 5 5 6 7 6 6 5 5 3 5 LVORI...........2 2 3 3 3 4 4 4 5 5 6 6 ADI.............27 3 2 2 3 3 3 2 2 2 2 2 Haines index....4 3 3 3 3 3 3 3 3 3 3 3 Vrate kt-ft/1K..23 11 4 4 3 1 1 1 1 1 1 1 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR .WEDNESDAY... Sky/weather.........Partly sunny (60-70 percent). Slight chance of rain showers late in the morning. Rain showers likely and slight chance of thunderstorms late in the afternoon. Chance of pcpn......60 percent. Max temperature.....Around 71. Min humidity........57 percent. Wind (20 ft)........Light winds becoming southeast 5 to 6 mph late in the morning. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing height.......3500 ft AGL. Transport winds.....South 7 to 16 mph increasing to 20 to 21 mph late in the afternoon. Smoke dispersal.....Poor (1500 knot-ft) early in the morning increasing to excellent (63200 knot-ft) in the afternoon. LVORI...............4. ADI.................7 increasing to 54. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........44 52 64 72 76 81 Weather cov..... S CHC LIKELY LIKELY Weather type....NONE NONE NONE RNSHWR RNSHWR RNSHWR Tstm cov........ S CHC S CHC Chc of pcpn (%).0 10 10 20 60 60 Temp............50 52 61 66 68 70 RH..............89 86 70 61 57 57 20 ft wind......S 3 S 3 S 4 S 5 S 6 SE 5 20 ft wind gust.5 5 6 7 8 7 Mix hgt (ft)....300 300 1900 2700 2900 3300 Transport wind..SE 7 SE 13 S 12 S 12 S 14 S 20 LVORI...........6 5 3 2 1 1 ADI.............3 9 22 27 33 49 Haines index....3 4 5 4 3 4 Vrate kt-ft/1K..2 3 19 28 35 56 Ventrate Cat....POOR POOR POOR POOR POOR FAIR $$ Forecaster...ALBRIGHT Requested by...Bobby Clontz Type of request...PRESCRIBED .TAG 2108871.0/AKQ .DELDT 04/13/21 .FormatterVersion 1.0.26 .EMAIL bclontz@tnc.org

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