
Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon Aug 10 2026
VAZ018-110800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Mon Aug 10 2026
Date 08/10/26 Tue 08/11/26 Wed 08/12/26 Thu
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 68 87 69 86 68
TEMP 70 69 71 72 80 84 86 79 75 72 71 72 79 84 85 78 72 70 69 70
DEWPT 65 65 66 66 69 69 69 69 68 67 67 68 71 71 71 70 68 68 67 68
MIN/MAX RH 95 58 92 61 95
RH 84 87 84 81 69 61 57 72 79 84 87 87 77 65 63 76 87 93 93 93
WIND DIR NW NW NW W NW NW W W W W W W W W NW W W NW W W
WIND SPD 12 6 5 6 10 8 8 5 6 6 9 9 8 6 6 4 4 3 4 5
WIND GUST 21 25 26 19 21 25 28 28 23 20 19 16 16 14 17 18
CLOUDS B1 B2 B1 B2 SC B1 SC B1 B1 B1 B2 B2 B1 B1 SC B1 B1 B1 B1 B1
CLOUDS(%) 67 72 63 74 42 59 44 53 61 51 80 78 62 57 43 66 66 66 62 60
VSBY 10 9 9 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 30 40 20 50
RAIN SHWRS IS IS IS IS IS SC SC IS IS SC SC IS IS
TSTMS IS IS IS IS IS SC IS
MIX HGT <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 1 2 4 4 1
T WIND DIR N NW W W NW W W W SW W W NW NW NW W SW
T WIND SPD 26 14 11 17 20 14 12 8 4 8 16 12 18 20 10 6
DISPERSION FR PR PR PR PR PR PR VP VP VP VP
ADI 24 13 10 13 66 56 59 5 3 5 14 20 53 80 51 5
MAX LVORI 3 4 4 4 3 1 1 3 4 5 4 4 3 1 1 4
STABILITY D D D C B C B E E E D C C C B E
CEILING 1400 8600 None None None 7500 5700 None 16000
STA PRES 27.94 27.83 27.82 27.78 27.75 27.73 27.75 27.69
Date 08/13Fri 08/14/26Sat 08/15/26Sun 08/16/26Mon 08/17/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 87 70 83 67 84 68 88 70 86
TEMP 85 79 72 71 82 75 70 69 82 75 70 70 86 78 72 71 84 76
DEWPT 71 70 69 69 72 70 68 66 70 70 67 67 71 70 68 68 70 69
RH 63 74 90 93 72 84 93 90 67 84 90 90 61 76 87 90 63 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 SC B1 B1 SC SC B1
POP 12HR 20 20 40 30 50 20 30 30 30
RAIN SHWRS IS IS IS SC SC SC IS SC SC IS SC SC IS SC
TSTMS IS IS IS SC SC IS SC SC
$$
This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.
Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)
DAY 1 THROUGH 3...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew point temperature
MIN/MAX RH OR MAX/MIN RH(%).........Maximum/Minimum humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
TYPE...
RAIN...........Rain
RAIN SHWRS.....Rain showers
TSTMS..........Thunderstorms
DRIZZLE........Drizzle
SNOW...........Snow
SNOWSHWRS......Snow showers
SLEET..........Sleet
FRZG RAIN......Freezing rain
FRZG DRZL......Freezing drizzle
COVERAGE...
IS.............Isolated
SC.............Scattered
NM.............Numerous
O..............Occasional
S..............Slight chance
C..............Chance
L..............Likely
WD.............Widespread
D..............Definite
AR.............Areas
PA.............Patchy
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure
Day 4 Through 7...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew Point temperature
RH(%)...............................Relative Humidity
WIND SPD(MPH).......................Wind Speed
Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions