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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Jul 25 2026
VAZ024-260800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Sat Jul 25 2026
Date 07/25/26 Sun 07/26/26 Mon 07/27/26 Tue
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 61 88 63 90 66
TEMP 66 63 63 65 79 86 87 79 70 67 64 67 81 88 90 83 72 69 67 70
DEWPT 65 63 62 64 66 65 65 67 67 65 63 67 68 67 67 68 69 68 67 70
MIN/MAX RH 99 46 100 46 100
RH 97100 97 97 64 50 48 67 90 93 97100 65 50 47 61 90 97100100
WIND DIR N N N N N NW W N N N N N NW W W SW N SW SW W
WIND SPD 0 0 0 0 0 1 2 0 0 0 0 0 1 2 3 1 0 1 1 2
CLOUDS FW SC B2 B1 FW SC SC B1 B1 SC B1 SC SC B1 SC SC SC B1 B1 B2
CLOUDS(%) 25 50 74 53 17 37 40 54 57 35 54 44 47 53 29 40 46 69 69 75
VSBY 8 3 1 2 10 10 10 10 6 4 4 4 9 10 10 7 7 1 1
POP 12HR 5 30 40 10 50
RAIN SHWRS IS SC SC IS IS SC SC NM
TSTMS IS SC IS IS
Obvis PF PF PF PF PF PF
MIX HGT <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR S SW NW NW N NW W SE E NE NE N N N S W
T WIND SPD 3 2 2 2 6 3 3 3 2 3 2 1 2 0 5 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 2 15 18 12 2 1 2 1 1 8 0 34 3
MAX LVORI 10 10 10 8 3 2 2 3 7 7 8 10 3 2 1 3
STABILITY G G F A A A A F F G F A A B A G
CEILING None 8500 None None None None None None None
STA PRES 28.48 28.46 28.45 28.38 28.38 28.40 28.41 28.36
Date 07/28Wed 07/29/26Thu 07/30/26Fri 07/31/26Sat 08/01/26
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 90 65 88 61 88 62 89 64 89
TEMP 87 82 70 68 86 79 66 65 85 80 66 66 86 81 68 67 87 81
DEWPT 73 71 68 68 66 64 62 62 63 64 62 64 64 66 64 65 67 67
RH 63 69 93100 51 60 87 90 48 58 87 93 48 60 87 93 52 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC SC SC FW FW FW SC SC SC SC SC SC SC SC B1
POP 12HR 60 30 20 10 10 10 10 10 40
RAIN SHWRS NM NM SC IS IS SC
TSTMS IS SC IS 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