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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
402 AM EDT Wed Apr 1 2026
VAZ046-012000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
402 AM EDT Wed Apr 1 2026
Date Wed 04/01/26 Thu 04/02/26 Fri 04/03/26
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 84 63 84 61 82
TEMP 64 64 75 82 82 75 70 68 65 65 73 81 83 77 71 67 63 62 72 80 81 76
DEWPT 56 56 60 59 58 57 59 60 60 59 61 60 58 56 56 55 57 58 60 57 56 56
MAX/MIN RH 42 87 42 89 42
RH 75 75 60 46 44 54 68 76 84 81 66 49 43 48 59 65 81 87 66 45 42 50
WIND DIR SW SW SW SW SW SW S SW S S SW S S S S S S S SW SW SW S
WIND SPD 10 10 10 10 9 5 5 5 5 5 8 9 10 6 6 8 8 8 10 10 10 5
WIND GUST 23 21 16 17 18 19 19 18 20 16
CLOUDS FW FW FW SC B1 B1 SC SC FW SC SC SC SC SC FW FW FW SC SC SC SC SC
CLOUDS(%) 20 23 25 41 61 57 44 43 18 40 33 38 39 35 22 22 20 37 36 28 30 41
VSBY 10 10 10 9 8 8 8 10 10 10 10 7 7 10 10 10 10
POP 12HR 40 40 20 5 20
RAIN SHWRS SC SC IS IS IS IS IS
TSTMS SC SC IS
MIX HGT <1 <1 3 6 6 <1 <1 <1 <1 <1 2 5 5 <1 <1 <1 <1 1 3 6 6 <1
T WIND DIR SW SW W SW SW S S S S S SW SW SW S S S S SW SW SW SW S
T WIND SPD 9 14 17 10 14 8 9 8 6 11 12 14 18 14 10 9 8 13 16 18 16 5
DISPERSION FR PR PR PR PR PR PR PR PR PR
ADI 6 11 55 47 49 5 6 5 3 12 33 62 73 7 5 6 5 21 55 82 73 4
MAX LVORI 3 4 1 1 1 3 3 4 5 4 3 1 1 2 3 3 4 4 1 1 1 2
STABILITY E C C C D E E E F B B C C F F E E B C C C E
CEILING None 6800 None None None None None None None None
STA PRES 29.44 29.38 29.43 29.47 29.53 29.50 29.55 29.58 29.61 29.53
Date Sat 04/04/26Sun 04/05/26Mon 04/06/26Tue 04/07/26
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 61 84 61 73 41 64 40 67
TEMP 67 62 82 78 68 63 70 64 50 42 61 57 45 42 65 59
DEWPT 57 58 58 54 58 58 56 45 36 30 29 31 33 33 36 34
RH 70 87 44 43 70 84 61 50 58 62 29 37 62 70 34 39
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC B1 B2 B2 B1 SC FW FW FW SC SC SC
POP 12HR 5 30 30 80 30 5 0 10
RAIN SHWRS SC IS SC NM O SC
TSTMS IS
$$
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