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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun Jul 26 2026
NCZ003-270800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 AM EDT Sun Jul 26 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 64 82 67 86 68
TEMP 68 68 74 79 81 78 73 70 68 70 78 84 86 81 72 70 68 70
DEWPT 67 67 68 68 68 70 70 68 66 67 69 67 67 68 69 69 68 69
MIN/MAX RH 100 64 95 53 99
RH 97 97 82 69 65 76 90 93 93 90 74 57 53 65 90 97100 97
WIND DIR N W W SW SW W W NW NW N N N NW SW W W W W
WIND SPD 0 2 2 3 3 2 2 2 3 3 4 4 3 3 3 3 4 5
CLOUDS B1 B1 B1 B1 SC SC SC SC SC SC SC B1 SC SC SC SC SC B1
CLOUDS(%) 69 69 60 54 45 42 48 35 33 30 29 62 45 49 29 38 48 57
VSBY 1 1 10 7 7 7 7 10 10 10 10 10 10 10 10 7 7 7
POP 12HR 5 20 20 5 20
RAIN SHWRS IS IS IS IS IS IS SC
TSTMS IS IS IS
Obvis PF PF
MIX HGT <1 <1 2 4 4 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1
T WIND DIR SW W NE SW SW SW NE N N N NE N NW N W NW NW NW
T WIND SPD 1 1 2 1 4 9 1 1 2 1 4 3 8 0 2 1 2 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 5 6 22 4 1 1 1 1 21 14 39 0 1 1 2 2
MAX LVORI 9 8 4 3 2 4 7 8 8 7 3 2 1 4 7 9 10 10
STABILITY F B B B A F F G G A A C A F G G E C
CEILING 400 None None None None None None None None
STA PRES 28.90 28.88 28.79 28.80 28.81 28.81 28.79 28.78 28.76
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 88 67 85 63 82 63 82 65 80
TEMP 84 81 70 69 82 78 66 65 80 76 65 65 80 76 67 67 78 75
DEWPT 74 72 69 68 67 66 63 63 65 66 63 64 67 69 66 67 69 70
RH 72 74 97 97 61 67 90 93 60 71 93 97 65 79 97100 74 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 FW FW FW FW FW FW FW FW FW FW SC SC B1 B1 B1
POP 12HR 70 30 5 0 5 0 20 20 40
RAIN SHWRS SC NM SC IS IS IS SC
TSTMS IS NM 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
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