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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Sun Apr 26 2026
NCZ005-270800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
431 PM EDT Sun Apr 26 2026
Date 04/26/26 Mon 04/27/26 Tue 04/28/26 Wed
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 45 71 45 68 53
TEMP 64 62 52 49 46 47 60 68 71 65 54 50 45 48 61 65 67 65 58 56 54 56
DEWPT 49 47 46 45 43 44 42 41 41 42 43 43 43 43 46 48 50 52 53 54 54 54
MIN/MAX RH 95 33 92 54 100
RH 58 58 80 86 89 89 51 37 34 43 66 77 93 83 58 54 54 63 83 93100 93
WIND DIR NE NE NE NE N NE NE E E E E SE SE S SW SW SW SW SW SW SW SW
WIND SPD 9 6 6 5 5 5 6 8 6 4 4 3 2 2 4 6 6 3 3 3 3 4
CLOUDS FW FW FW B2 B2 SC FW FW FW FW FW FW SC B1 B2 OV B2 SC B1 B1 B1 OV
CLOUDS(%) 24 12 18 71 84 27 10 8 8 8 22 23 33 65 77 91 79 41 51 57 64 88
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 50 30
RAIN SHWRS SC SC SC SC SC SC O
TSTMS IS IS
Obvis PF
MIX HGT 4 <1 <1 <1 <1 1 3 4 4 <1 <1 <1 <1 <1 2 3 4 <1
T WIND DIR NE NE NE NE NE NE NE NE E E E SE SE S S SW SW SW
T WIND SPD 17 13 16 13 19 18 13 9 9 4 3 4 4 10 8 6 10 8
DISPERSION PR PR PR PR VP VP VP VP VP VP VP VP
ADI 81 9 7 9 9 30 55 42 46 2 2 2 2 11 23 23 36 4
MAX LVORI 1 2 4 5 5 4 1 1 1 2 3 4 6 4 2 2 1 3
STABILITY B E F E F A B B B F F G G B C C C F
CEILING None 1900 None None None None 9900 2100 None
STA PRES 29.39 29.45 29.51 29.46 29.51 29.50 29.50 29.41
Date 04/29Thu 04/30/26Fri 05/01/26Sat 05/02/26Sun 05/03/26
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 71 51 70 43 71 44 68 44 70
TEMP 69 70 60 53 67 63 49 47 68 63 50 47 64 61 49 47 67 64
DEWPT 61 60 54 48 40 35 35 36 35 38 39 40 38 37 36 36 36 39
RH 76 71 81 83 37 35 58 65 29 39 66 76 38 41 61 65 32 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV OV B1 SC SC SC FW FW FW SC SC B1 B1 SC SC SC FW SC
POP 12HR 90 40 20 10 20 30 30 10 5
RAIN SHWRS O O SC IS IS IS IS IS SC SC IS
TSTMS 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