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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EDT Sun Jul 26 2026
NCZ005-262000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
1031 AM EDT Sun Jul 26 2026
Date Sun 07/26/26 Mon 07/27/26 Tue 07/28/26
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 83 67 87 69 89
TEMP 75 82 83 78 73 70 68 71 81 86 87 82 74 71 69 72 82 88 86 81
DEWPT 68 69 69 70 70 69 68 69 70 68 67 69 69 69 69 71 74 75 74 73
MAX/MIN RH 63 100 51 99 65
RH 79 65 63 76 90 97100 93 69 55 52 65 84 93100 97 77 66 68 77
WIND DIR NW W SW S SW W NW N N N NW S SW SW SW SW W SW SW SW
WIND SPD 2 3 3 2 3 3 2 3 4 3 3 2 3 3 5 5 9 11 10 6
WIND GUST 21
CLOUDS SC SC SC SC B2 SC SC B1 SC SC SC SC SC SC SC SC B1 OV OV B1
CLOUDS(%) 43 38 36 48 76 40 33 56 42 48 41 31 27 31 49 49 63 91 91 57
VSBY 10 10 10 10 8 5 2 3 10 10 10 10 10 10 10 7 7 6 6 7
POP 12HR 20 30 5 10 70
RAIN SHWRS IS IS SC IS IS NM NM SC
TSTMS IS IS IS SC SC SC
MIX HGT 2 5 4 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR N N SW SW SW N NW NE NE N NW W W W NW S W W W SW
T WIND SPD 4 2 3 6 4 0 2 6 5 3 6 4 3 1 2 1 11 19 13 10
DISPERSION VP VP VP VP VP VP VP PR PR
ADI 13 14 18 3 2 0 1 7 21 22 42 2 2 1 2 1 28 69 49 7
MAX LVORI 4 2 2 4 6 10 10 6 3 2 1 3 6 8 10 8 3 1 1 4
STABILITY A A A F F G G B A A A G G G E A C C C E
CEILING None 3800 None None None None None 13800 7600
STA PRES 29.11 29.12 29.12 29.14 29.09 29.08 29.07 29.05 28.97
Date Wed 07/29/26Thu 07/30/26Fri 07/31/26Sat 08/01/26
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 67 87 64 84 64 84 66 83
TEMP 71 71 85 80 68 67 82 79 67 68 83 79 69 69 82 77
DEWPT 70 69 68 67 64 65 66 67 63 65 68 69 67 68 70 71
RH 97 93 57 65 87 93 58 67 87 90 61 72 93 97 67 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 FW FW SC FW CL FW FW FW FW FW SC SC SC SC B1
POP 12HR 40 5 5 5 5 20 10 40
RAIN SHWRS SC IS SC
TSTMS 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