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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sun Apr 26 2026
VAZ024-270800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 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 42 73 43 68 51
TEMP 68 61 51 46 43 45 61 70 72 65 54 48 44 47 58 63 68 64 57 54 51 54
DEWPT 47 46 44 42 41 42 41 40 40 41 41 41 40 42 46 49 51 52 51 51 51 52
MIN/MAX RH 97 31 87 55 98
RH 47 58 77 86 93 89 48 33 31 41 61 77 86 83 64 60 54 65 80 90100 93
WIND DIR E E E NE N N E E SE SE SE SE SE S S S S S S SW SW S
WIND SPD 6 3 2 1 1 1 2 5 4 2 2 1 1 1 3 5 4 2 1 1 1 1
WIND GUST 14
CLOUDS SC FW FW FW FW FW FW FW FW FW FW SC SC B2 B2 B2 B1 B1 SC B1 B1 B2
CLOUDS(%) 37 20 15 20 23 19 8 18 17 15 21 33 40 81 84 85 60 51 50 63 68 87
VSBY 10 10 10 8 5 10 10 10 10 10 10 10 10 7
POP 12HR 0 0 5 70 30
RAIN SHWRS NM NM SC SC IS IS SC SC O
TSTMS IS IS
Obvis PF PF
MIX HGT 4 1 1 <1 <1 1 4 4 4 <1 <1 <1 <1 1 3 3 3 <1
T WIND DIR NE NE NE NE E E E E SE SE SE S SE S S SW SW SW
T WIND SPD 12 10 11 8 11 6 6 5 8 4 3 4 3 8 12 4 11 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 64 5 5 4 5 12 32 32 43 2 2 2 2 15 45 14 36 3
MAX LVORI 1 3 4 5 6 5 1 1 1 2 3 4 6 4 1 2 1 3
STABILITY B G G G G A A A A G G G G B B C C F
CEILING None None None None None None None 3300 1500 None
STA PRES 28.55 28.62 28.68 28.73 28.70 28.72 28.70 28.71 28.61
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 73 49 69 39 69 40 67 38 71
TEMP 71 69 57 51 66 61 46 43 67 62 47 44 64 60 45 43 68 64
DEWPT 59 56 49 43 36 33 32 33 35 35 36 37 36 35 33 34 36 38
RH 66 63 75 74 33 35 58 67 30 36 65 76 35 39 62 70 31 38
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV B1 SC SC SC FW FW SC SC SC B1 SC SC FW FW FW SC
POP 12HR 100 40 20 10 20 30 30 10 5
RAIN SHWRS O O SC IS IS IS IS IS SC SC SC IS
TSTMS 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