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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sat Apr 25 2026
NCZ001-260800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
231 AM EDT Sat Apr 25 2026
Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon
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 53 66 50 62 43
TEMP 55 57 65 61 58 55 54 53 52 51 54 60 62 56 51 48 45 44
DEWPT 46 47 48 52 52 51 50 49 49 48 46 45 46 47 45 43 41 40
MIN/MAX RH 73 55 93 54 87
RH 72 69 54 72 80 86 86 86 89 89 74 58 56 72 80 83 86 86
WIND DIR W W SW W W NW NW NW NW NW N N NE E E E SE SE
WIND SPD 9 9 9 9 8 9 9 10 11 12 11 10 10 13 13 13 11 10
CLOUDS SC SC B1 OV OV B2 B1 B1 SC B1 B1 B1 B1 SC SC B1 B1 SC
CLOUDS(%) 35 39 60100 90 87 51 56 38 57 57 59 59 28 39 55 60 46
VSBY 10 10 10 8 7 7 6 6 6 6 6 6 6 10 10 10 10 10
POP 12HR 5 90 50 40 10
RAIN SHWRS IS O SC SC SC IS IS IS SC SC SC
TSTMS IS SC IS
MIX HGT <1 <1 4 3 2 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1
T WIND DIR W W W SW NW W NW N N N N NE N SE E SE SE SE
T WIND SPD 4 3 10 12 13 8 5 10 12 9 6 5 3 9 10 9 6 5
DISPERSION PR PR PR FR FR FR FR FR FR
ADI 3 4 39 30 37 7 5 9 8 7 19 29 13 8 9 8 6 6
MAX LVORI 3 3 1 3 3 5 5 5 5 5 3 2 2 3 4 4 4 5
STABILITY E B C D C D D D E C C B C D D D D B
CEILING None 2700 600 1300 None 35000 None None None
STA PRES 26.53 26.55 26.52 26.53 26.54 26.60 26.62 26.72 26.74
Date 04/27Tue 04/28/26Wed 04/29/26Thu 04/30/26Fri 05/01/26
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 64 46 62 53 64 46 57 39 55
TEMP 61 58 49 48 56 59 54 54 60 59 52 48 54 51 43 43 53 50
DEWPT 42 42 40 40 48 52 51 52 53 52 48 43 37 34 33 33 35 38
RH 49 55 71 74 74 78 90 93 78 78 86 83 52 52 67 67 50 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW B1 B2 B1 SC B1 B2 B2 B1 B1 SC B1 SC B1 B1 B1
POP 12HR 5 30 70 40 80 30 30 30 50
RAIN SHWRS SC NM SC IS SC NM O SC IS IS SC IS SC SC SC
TSTMS IS IS SC
$$
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