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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
227 PM EST Sun Feb 1 2026
VAZ046-020900-
RAWS 441101
37.39N 78.80W Elev. 804 ft
227 PM EST Sun Feb 1 2026
Date 02/01/26 Mon 02/02/26 Tue 02/03/26 Wed
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX TEMP 12 37 18 41 31
TEMP 31 23 19 17 15 14 26 35 37 28 25 23 21 20 31 38 39 36 34 34 32 32
DEWPT 12 10 7 5 5 5 11 13 15 16 15 15 14 15 23 24 26 27 29 29 30 29
MIN/MAX RH 66 38 80 56 91
RH 45 57 59 58 64 67 52 40 40 60 65 71 74 81 72 57 59 69 82 82 92 88
WIND DIR NW NW W W W W W W W SW W W W W W SW SW S SW S SW N
WIND SPD 10 6 6 5 5 4 5 5 5 3 4 4 4 4 5 6 5 2 2 2 2 3
WIND GUST 20 18 17 16
CLOUDS CL CL CL CL CL CL CL CL FW FW FW FW FW SC SC B1 B2 B2 B2 B2 B2 B2
CLOUDS(%) 4 3 2 2 4 5 4 3 9 20 14 9 16 29 48 62 85 76 85 85 84 77
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 7 6 4 6
POP 12HR 0 0 0 5 50
RAIN C C C S
SNOW C C C S
MIX HGT 3 <1 <1 <1 <1 <1 <1 2 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR NW NW NW W W W W W W SW W W W W W SW SW S
T WIND SPD 19 12 9 11 6 4 6 5 9 4 12 5 3 3 6 6 8 2
DISPERSION PR PR PR PR VP VP VP VP VP VP VP VP
ADI 63 6 4 5 3 5 9 15 24 2 6 3 2 4 14 16 16 1
MAX LVORI 1 3 3 3 3 3 2 2 2 3 3 3 4 5 3 2 2 3
STABILITY C F F F F B B B B G F F F B B D D F
CEILING None None None None None None None 2600 3300
STA PRES 29.39 29.43 29.49 29.43 29.48 29.51 29.54 29.48
Date 02/04Thu 02/05/26Fri 02/06/26Sat 02/07/26Sun 02/08/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN TEMP 39 20 38 19 43 22 32 14 34
TEMP 37 33 28 21 34 28 21 21 40 39 32 23 31 24 18 15 30 27
DEWPT 30 26 21 16 15 15 13 14 23 27 20 11 5 6 4 3 7 11
RH 75 75 75 81 45 58 71 74 50 62 61 59 32 45 53 58 37 50
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 SC FW FW SC B1 B1 SC FW FW FW FW FW SC SC
POP 12HR 20 10 5 0 20 0 0 0 5
RAIN S S
SNOW S S
$$
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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