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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Mon Jul 27 2026
NCZ001-280800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
401 PM EDT Mon Jul 27 2026
Date 07/27/26 Tue 07/28/26 Wed 07/29/26 Thu
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 63 75 60 70 56
TEMP 75 68 64 63 64 64 66 72 71 66 66 65 63 61 62 68 69 64 61 59 58 56
DEWPT 61 62 62 61 61 61 65 66 66 64 63 62 61 59 59 58 58 56 56 56 55 53
MIN/MAX RH 93 79 95 67 92
RH 62 81 93 93 90 90 97 81 84 93 90 90 93 93 90 70 68 75 84 90 90 90
WIND DIR NW NW W W W W W W W NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 5 5 6 9 11 17 16 17 17 21 24 21 19 23 19 17 17 20 19 21 19 21
WIND GUST 27 27 27 27
CLOUDS SC SC SC SC SC B1 B2 OV B1 B1 B1 B1 B1 B1 FW FW FW FW FW FW FW FW
CLOUDS(%) 38 38 44 29 44 52 71 93 65 60 53 52 58 66 19 13 10 6 20 24 22 21
VSBY 10 10 10 10 10 7 7 6 6 7 7 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 50 40 0 0
RAIN SHWRS SC SC SC SC SC SC
TSTMS SC SC SC SC
MIX HGT 4 <1 <1 <1 <1 <1 2 3 3 1 1 <1 <1 2 3 4 4 2
T WIND DIR NW W W W NW SW W W W NW NW NW NW NW NW NW NW NW
T WIND SPD 6 4 3 4 10 20 34 29 29 19 13 17 14 18 25 24 23 12
DISPERSION PR PR PR FR GD GD GD GD GD GD GD GD
ADI 38 2 2 3 9 26 64 75 69 22 12 15 13 31 83 89 90 14
MAX LVORI 1 5 6 6 5 4 4 4 4 5 5 5 5 4 4 3 1 3
STABILITY A F E E D D D D D D D D D D C C C D
CEILING None None 2800 200 None 300 None None None
STA PRES 26.60 26.58 26.51 26.44 26.48 26.51 26.55 26.57
Date 07/30Fri 07/31/26Sat 08/01/26Sun 08/02/26Mon 08/03/26
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 70 56 73 59 73 61 72 61 71
TEMP 67 65 59 56 70 65 61 60 70 66 63 62 68 66 64 61 68 65
DEWPT 56 54 54 54 56 57 56 56 59 60 60 60 63 62 62 61 64 63
RH 68 68 83 93 61 75 84 87 68 81 90 93 84 87 93100 87 93
WIND SPD 15> <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC SC B1 B2 B2 B1 B2 B2 B2 B2 B1 B2
POP 12HR 0 0 5 5 30 30 70 30 60
RAIN SHWRS SC SC SC SC NM SC SC NM
TSTMS SC SC 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
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