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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sun Jul 19 2026
VAZ018-200800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Sun Jul 19 2026
Date 07/19/26 Mon 07/20/26 Tue 07/21/26 Wed
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 64 81 68 88 69
TEMP 71 68 66 68 75 78 79 76 71 70 70 71 81 86 84 76 73 72 71 69
DEWPT 65 65 64 65 67 68 69 69 68 68 68 69 73 72 73 70 69 69 68 69
MIN/MAX RH 96 66 96 64 97
RH 81 90 93 90 76 71 72 79 90 93 93 93 77 63 70 82 87 90 90100
WIND DIR N NE NE E SE SE SE SE SE SW SW SW SW SW W SW SW W W W
WIND SPD 4 1 1 1 2 3 4 3 2 1 1 3 5 6 8 6 8 6 8 8
WIND GUST 13 19 20 21 23 26 27 26 27
CLOUDS FW SC B1 B2 B1 SC B1 B2 B1 B1 B1 B1 B1 B2 B2 OV OV OV OV B2
CLOUDS(%) 16 34 60 71 51 49 62 75 67 64 61 59 59 84 84 94 94 92 92 71
VSBY 10 7 3 5 10 9 10 8 6 4 5 10 10 10 10 10
POP 12HR 10 30 50 80 90
RAIN SHWRS IS SC SC SC SC SC SC O O O O O O SC
TSTMS IS SC IS SC SC SC SC SC IS
Obvis PF PF
MIX HGT <1 <1 <1 1 3 4 3 <1 <1 <1 <1 <1 3 4 2 1
T WIND DIR NW NW NW NW SW SW S SE E SE SW SW W SW SW S
T WIND SPD 5 3 2 1 3 5 4 5 3 3 4 11 20 19 9 4
DISPERSION VP VP VP VP VP VP VP PR PR PR PR
ADI 3 2 1 2 11 26 14 3 2 2 2 12 70 70 22 3
MAX LVORI 5 7 8 7 4 3 3 4 7 7 7 5 3 1 3 5
STABILITY G F F B B A C F F F F B C C C E
CEILING None 14900 None 2600 1000 700 1600 1600 2200
STA PRES 27.75 27.77 27.79 27.76 27.76 27.71 27.73 27.69
Date 07/22Thu 07/23/26Fri 07/24/26Sat 07/25/26Sun 07/26/26
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 84 61 78 61 79 64 80 64 84
TEMP 83 74 65 62 76 70 62 63 77 71 65 65 78 72 66 66 81 75
DEWPT 69 65 60 59 61 61 57 58 63 63 59 61 66 66 63 64 67 68
RH 63 74 84 90 60 73 84 84 62 76 81 87 67 81 90 93 63 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC FW SC FW FW SC B1 B1 B1 B1 B1 B1 B1 SC SC B1
POP 12HR 50 10 10 20 20 30 40 20 30
RAIN SHWRS SC SC IS IS SC IS IS SC IS IS IS SC
TSTMS IS SC IS SC IS 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