Spot Forecast
Issued by NWS Blacksburg, VA
Issued by NWS Blacksburg, VA
431 FNUS71 KRNK 081945 FWSRNK Spot Forecast for Row...USFS National Weather Service Blacksburg VA 345 PM EDT Mon Jul 8 2024 Forecast is based on forecast start time of 1800 EDT on July 08. If conditions become unrepresentative, contact the National Weather Service. ...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM EDT TUESDAY... .DISCUSSION... Typical summertime weather pattern expected this week with hot/humid weather during the day and muggy conditions with little airflow at night. There will be a chance for afternoon and evening thunderstorms each day, with the best chance of rain Wednesday afternoon. Humidity minimums during the day are expected to remain above 50 percent with excellent recovery at night. Wind will be light, generally down river late at night and early morning, and up river during the afternoon and evening. .TONIGHT... Sky/weather.........Partly cloudy (35-55 percent cloud cover) Isolated showers and thunderstorms, mainly before midnight. Patchy fog after 3 am. CWR (0.01 in).......20 percent decreasing to 10 percent in the late evening and overnight. Min temperature.....Around 72. Max humidity........96 percent. Wind (20 ft)........Light winds. Gusty and erratic winds expected near thunderstorms early in the evening. Mixing height.......500 ft AGL. Mixing winds........South 2 to 8 mph during the evening, then calm overnight. Smoke dispersal.....Fair (29000 knot-ft) early in the evening decreasing to poor (0 knot-ft) late in the night. LVORI...............5. ADI.................42 early in the evening decreasing to 0 late in the night. 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 (%).........41 62 49 43 43 40 41 44 55 42 63 54 Weather cov.....ISO ISO ISO ISO PTY PTY PTY Weather type....RW RW RW RW FOG FOG FOG Tstm cov........ISO ISO ISO CWR.............20 20 20 20 10 10 10 0 0 0 10 10 Temp............89 88 86 82 80 78 77 76 76 75 74 74 RH..............56 59 62 73 79 83 85 87 89 90 91 92 20 FT wind dir..SE SE SE SE N NW W NW N N W NW 20 FT wind spd..4 3 3 2 0 1 1 1 0 0 1 1 20 FT wind gust.6 5 5 1 1 Mix hgt (kft)...4.3 3.2 1.5 0.6 0.5 0.5 0.6 0.5 0.5 0.5 0.5 0.5 Mixng wind dir..S S S S S S S SW SW SW N N Mixng wind spd..8 8 8 7 6 5 3 3 2 1 0 0 LVORI...........1 3 3 3 4 5 5 6 7 7 7 8 ADI.............42 4 4 3 3 2 2 1 1 1 0 0 Haines index....4 4 4 3 3 3 3 3 3 3 3 3 VRate mph-ft/1K.33 26 12 4 3 3 2 2 1 1 0 0 .TUESDAY... Sky/weather.........Partly sunny (55-65 percent). Patchy fog early in the morning. Chance of showers and thunderstorms late in the afternoon. CWR (0.01 in).......10 percent increasing to 30 percent. Max temperature.....Around 94. Min humidity........52 percent. Wind (20 ft)........Light winds. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing height.......5500 ft AGL. Mixing winds........Near calm in the morning, south 2 to 9 mph in the afternoon. Smoke dispersal.....Poor (200 knot-ft) early in the morning increasing to good (43400 knot-ft) in the afternoon. LVORI...............5. ADI.................0 early in the morning increasing to 57 in the afternoon. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........46 58 46 54 53 62 Weather cov.....PATCHY S CHC CHANCE Weather type....FOG NONE NONE NONE RNSHWR RNSHWR Tstm cov........ S CHC CHANCE CWR.............10 10 10 10 20 30 Temp............74 76 83 88 93 94 RH..............92 89 78 65 54 52 20 ft wind......N 0 W 1 S 2 S 3 S 3 S 2 20 ft wind gust. 4 5 4 Mix hgt (ft)....500 700 2600 4600 5500 5000 Mixing wind.....N 0 SW 2 S 3 S 6 S 7 SE 8 LVORI...........8 6 4 3 1 1 ADI.............0 2 13 29 43 48 Haines index....3 3 4 4 4 4 VRate mph-ft/1K.0 2 10 25 38 41 .TUESDAY NIGHT... Sky/weather.........Mostly cloudy (60-70 percent) then becoming partly cloudy (45-55 percent). Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms overnight. CWR (0.01 in).......30 percent decreasing to 10 percent. Min temperature.....Around 75. Max humidity........91 percent. Wind (20 ft)........Light winds. Gusty and erratic winds expected near thunderstorms early in the evening. Mixing height.......600 ft AGL. Mixing winds........South 10 to 13 mph. Smoke dispersal.....Good (43100 knot-ft) early in the evening decreasing to poor (5000 knot-ft) late in the night. LVORI...............4. ADI.................58 early in the evening decreasing to 5 late in the night. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........64 76 56 46 46 50 Weather cov.....CHANCE CHANCE S CHC S CHC Weather type....RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE Tstm cov........CHANCE CHANCE S CHC S CHC CWR.............30 30 20 20 10 10 Temp............91 85 80 78 77 76 RH..............56 72 84 85 88 89 20 ft wind......SE 2 SE2 S 2 S 2 S 0 NW 2 20 ft wind gust.4 8 7 7 7 7 Mix hgt (ft)....4700 800 600 800 700 600 Mixing wind.....SE 10 SE 13 S 12 S 10 S 8 S 6 LVORI...........1 3 5 5 5 6 ADI.............58 6 5 5 5 5 Haines index....4 4 3 3 3 3 VRate mph-ft/1K.50 10 6 9 8 6 .WEDNESDAY... Sky/weather.........Partly sunny (50-60 percent). Chance of showers early in the morning. Chance of thunderstorms late in the morning, then likely late in the afternoon. CWR (0.01 in).......10 percent increasing to 80 percent. Max temperature.....Around 90. Min humidity........73 percent. Wind (20 ft)........Light winds becoming south 5 to 6 mph late in the morning. Gusty and erratic winds expected near thunderstorms late in the morning. Mixing height.......5000 ft AGL. Mixing winds........South 12 to 21 mph increasing to around 22 mph late in the afternoon. Smoke dispersal.....Poor (7300 knot-ft) early in the morning increasing to excellent (95900 knot-ft) in the afternoon. LVORI...............5. ADI.................5 early in the morning increasing to 138 in the afternoon. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........55 57 52 54 Weather cov..... CHANCE CHANCE DEFNTE Weather type....NONE RNSHWR RNSHWR RNSHWR Tstm cov........ CHANCE LIKELY CWR.............10 50 50 80 Temp............75 79 88 89 RH..............90 87 76 73 20 FT wind......S 3G8 S 4G10 S 5G12 S 5G13 Mix hgt (ft)....700 1700 3400 4400 Mixing wind.....S 12 S 15 S 17 S 21 LVORI...........6 4 3 3 ADI.............5 34 58 81 Haines index....3 3 3 4 VRate mph-ft/1K.8 27 57 91 $$ Forecaster...Manuel Requested by...Brent Foltz Type of request...WILDFIRE .TAG 2417590.7/RNK .DELDT 07/08/24 .FormatterVersion 2.0.0 .EMAIL brent.foltz@usda.gov