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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 AM EDT Sun Jul 19 2026
NCZ005-192000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
701 AM EDT Sun Jul 19 2026
Date Sun 07/19/26 Mon 07/20/26 Tue 07/21/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 92 69 86 70 89
TEMP 77 86 89 85 82 75 73 71 72 78 83 82 80 74 73 72 74 81 86 86 83
DEWPT 72 72 72 73 73 73 72 70 71 73 73 73 73 72 72 71 73 75 74 73 73
MAX/MIN RH 57 98 71 98 66
RH 85 63 57 67 74 94 97 97 97 85 72 74 79 93 97 97 97 82 68 65 72
WIND DIR W W W W NW SW W N NE NE NE E SE S S SW SW SW SW SW SW
WIND SPD 4 5 6 5 2 2 2 3 3 3 3 4 2 2 2 4 5 9 11 10 9
CLOUDS SC B1 B2 B1 B2 B1 B1 SC B2 B2 B2 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1
CLOUDS(%) 34 59 72 65 71 60 56 50 81 82 86 59 75 75 56 62 69 62 67 67 69
VSBY 10 10 10 10 10 10 10 6 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 50 50 60 50
RAIN SHWRS SC SC SC SC SC SC SC NM NM SC SC IS IS SC SC SC
TSTMS SC SC SC SC SC SC SC IS IS SC SC SC
Obvis PF PF
MIX HGT <1 4 5 4 <1 <1 <1 1 <1 2 3 3 <1 <1 <1 <1 1 2 5 4 <1
T WIND DIR W NW W W W W NE NE NE E E SE E SE S S SW W SW SW S
T WIND SPD 8 9 10 9 10 10 4 8 8 6 2 3 5 2 4 5 3 16 18 23 12
DISPERSION VP VP VP VP VP VP VP VP PR
ADI 8 33 56 33 5 5 2 4 10 18 9 11 3 1 2 4 5 45 79 80 11
MAX LVORI 4 1 1 3 4 6 8 8 6 4 3 3 5 7 8 8 7 3 1 1 3
STABILITY A C B C F F F F B B B C F F F E C C C C D
CEILING 5900 17500 4600 2300 300 1500 5200 4200 3900 5600
STA PRES 29.19 29.12 29.16 29.20 29.24 29.19 29.17 29.16 29.21 29.12
Date Wed 07/22/26Thu 07/23/26Fri 07/24/26Sat 07/25/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 72 88 66 82 63 83 65 84
TEMP 76 76 85 82 71 68 80 77 67 66 81 78 68 68 82 79
DEWPT 72 73 74 72 67 65 64 64 63 63 64 65 65 66 68 67
RH 87 90 70 72 87 90 58 64 87 90 56 64 90 93 63 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 SC SC SC SC SC SC B1 SC B1 B1 B1
POP 12HR 50 60 40 20 20 20 20 30
RAIN SHWRS SC SC SC NM SC IS IS IS IS IS IS IS IS IS SC SC
TSTMS SC IS SC 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