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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Tue Mar 31 2026
VAZ046-312000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
731 AM EDT Tue Mar 31 2026
Date Tue 03/31/26 Wed 04/01/26 Thu 04/02/26
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 80 62 84 62 83
TEMP 59 70 79 80 74 70 68 64 63 76 82 84 78 71 68 64 63 75 81 83 76
DEWPT 51 53 54 52 53 55 56 56 57 59 58 57 59 59 59 59 59 61 60 59 57
MAX/MIN RH 38 81 40 89 45
RH 75 55 42 38 48 59 65 75 81 56 44 40 52 66 73 84 87 62 49 44 52
WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW S S S S SW S S S
WIND SPD 10 12 12 13 10 11 11 10 10 10 10 10 5 5 5 5 5 8 9 10 6
WIND GUST 23 23 23 25 21 25 23 23 20 20 16 16 16 17
CLOUDS FW FW SC SC FW FW FW SC SC FW B1 B1 B1 B1 SC SC FW FW SC SC FW
CLOUDS(%) 14 22 40 26 24 12 17 27 26 20 58 58 54 52 37 29 25 22 50 50 23
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 40 30 30
RAIN SHWRS SC SC SC SC SC SC
TSTMS IS SC
MIX HGT <1 2 6 6 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 2 6 5 <1
T WIND DIR SW SW SW SW SW SW SW SW SW W W SW S SW S S S SW S S S
T WIND SPD 8 17 19 25 10 11 10 9 12 17 10 11 9 5 4 4 9 11 16 17 9
DISPERSION FR FR FR FR PR PR PR PR PR
ADI 6 47 85111 7 8 7 6 10 54 45 33 6 4 2 2 10 36 70 73 4
MAX LVORI 4 1 1 1 2 3 3 4 4 1 1 1 2 3 3 5 5 1 1 1 2
STABILITY C C C C E E E E C C C D E E F F B B C C F
CEILING None None None None None 13800 None None None None
STA PRES 29.49 29.39 29.40 29.41 29.46 29.42 29.48 29.50 29.58 29.54
Date Fri 04/03/26Sat 04/04/26Sun 04/05/26Mon 04/06/26
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 60 81 61 84 63 80 48 65
TEMP 66 61 79 75 66 62 82 78 69 64 79 73 61 50 63 59
DEWPT 57 58 58 55 57 57 58 56 56 57 56 53 49 44 40 37
RH 73 90 49 50 73 84 44 47 63 78 45 49 65 80 43 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1
POP 12HR 10 20 10 30 20 50 40 30
RAIN SHWRS IS SC IS IS SC SC SC SC SC SC
TSTMS IS IS 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
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