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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
402 AM EDT Tue Mar 31 2026
NCZ006-312000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
402 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 81 60 85 62 85
TEMP 57 58 71 79 81 75 69 66 62 62 74 83 85 78 71 68 64 62 75 82 84 78
DEWPT 51 53 55 55 54 54 55 56 56 57 60 59 58 59 59 59 58 59 61 59 57 56
MAX/MIN RH 40 86 40 89 39
RH 80 83 57 44 39 48 61 70 81 84 62 44 40 52 66 73 81 90 62 46 40 47
WIND DIR SW SW SW SW SW S S SW SW SW SW SW SW S S S S S SW S S S
WIND SPD 8 5 9 10 10 5 6 6 6 5 6 8 8 4 4 4 4 4 5 8 8 4
WIND GUST 16 19 20 17 17
CLOUDS FW FW SC SC SC FW FW FW FW SC SC SC SC B1 SC FW FW FW FW FW FW FW
CLOUDS(%) 13 21 32 38 33 20 21 14 16 26 38 50 50 56 35 23 20 25 24 25 22 14
VSBY 10 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 30 20 10
RAIN SHWRS SC SC IS IS
MIX HGT <1 <1 3 5 6 <1 <1 <1 <1 <1 2 5 6 <1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR SW SW SW SW SW S S S SW SW W W SW S S S S S S S S S
T WIND SPD 9 9 21 19 24 9 8 10 8 9 13 9 11 6 5 6 6 10 12 12 13 6
DISPERSION PR PR PR PR PR VP VP VP VP VP
ADI 6 10 68 83107 4 4 5 4 10 38 55 73 5 3 3 3 11 45 77 86 3
MAX LVORI 4 4 1 1 1 2 3 3 4 4 1 1 1 2 3 3 5 5 1 1 1 2
STABILITY E B C C C F F F F B B B B E F F F B B B B F
CEILING None None None None None None None None None None
STA PRES 29.61 29.52 29.52 29.52 29.57 29.52 29.56 29.59 29.68 29.64
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 82 60 85 61 83 48 66
TEMP 66 61 80 76 65 61 82 79 67 62 81 76 61 51 64 61
DEWPT 58 60 58 56 57 59 58 56 57 58 57 55 52 47 43 39
RH 75 97 47 50 75 93 44 45 70 87 44 48 72 86 46 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1
POP 12HR 5 30 10 20 20 50 50 40
RAIN SHWRS IS SC IS 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