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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Tue Mar 31 2026
NCZ003-010800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
231 AM EDT Tue Mar 31 2026
Date 03/30/26 Tue 03/31/26 Wed 04/01/26 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 50 79 55 81 57
TEMP 53 53 68 77 77 71 65 61 57 57 71 79 81 75 66 63 59 57
DEWPT 49 50 53 54 54 56 56 56 55 55 59 59 58 59 59 58 56 57
MIN/MAX RH 91 43 97 47 99
RH 86 89 59 45 45 59 73 84 93 93 66 50 46 58 78 84 90100
WIND DIR SW S SW SW SW SW SW SW N SW SW S S SW SW SW S S
WIND SPD 3 1 4 5 5 2 2 2 1 1 2 4 4 2 1 1 1 1
WIND GUST 16 12
CLOUDS FW SC SC SC B1 SC SC FW FW SC B1 B2 B2 B1 B1 SC FW SC
CLOUDS(%) 21 40 33 42 52 36 26 17 25 45 54 70 70 59 53 28 20 30
VSBY 10 10 10 10 10 10 10 10 10 9 10 10 10 10 9 10 10 8
POP 12HR 0 20 5 60 20
RAIN SHWRS IS NM NM IS IS
TSTMS SC SC IS
MIX HGT <1 <1 3 6 5 <1 1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1
T WIND DIR SW SW SW SW SW S SW SW SW SW W W SW SW SW SW SW S
T WIND SPD 4 2 12 13 18 13 14 11 4 3 13 8 11 9 3 2 3 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 2 52 90 57 6 7 5 2 3 45 26 30 4 2 1 2 2
MAX LVORI 6 6 1 1 1 3 3 5 6 6 1 2 1 3 4 5 7 9
STABILITY G A B B D G G G G A C D D F F G G A
CEILING None None None None None None 3300 None None
STA PRES 28.32 28.34 28.25 28.25 28.25 28.31 28.28 28.31 28.32
Date 04/02Fri 04/03/26Sat 04/04/26Sun 04/05/26Mon 04/06/26
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 80 57 77 56 81 57 75 43 63
TEMP 78 74 63 58 75 71 60 58 78 75 63 59 75 69 55 45 62 58
DEWPT 60 57 55 57 58 57 56 56 58 56 55 56 57 53 47 42 40 37
RH 54 55 75 96 55 61 87 93 50 52 75 90 54 57 74 89 44 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B2 B1 B1 B1 B1 B1 SC B1 B1 B2 B1 B1 B1 B1
POP 12HR 20 10 40 20 40 30 60 40 30
RAIN SHWRS IS IS SC IS IS SC SC SC SC NM SC SC SC SC
TSTMS IS SC 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