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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Tue Apr 21 2026

NCZ005-220800-
RAWS 310540
36.38N  79.70W Elev. 858 ft
431 PM EDT Tue Apr 21 2026

Date           04/21/26      Wed 04/22/26            Thu 04/23/26            Fri
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                 48          84          52          85          57
TEMP          67 62 54 52 50 53 72 81 82 73 63 58 55 57 75 82 84 75 66 62 58 61
DEWPT         28 32 32 33 35 38 43 40 40 41 43 43 43 45 49 47 46 48 47 47 48 48
MIN/MAX RH                   61          22          67          27          72
RH            23 32 43 48 56 57 35 23 22 31 48 57 64 64 40 29 27 38 50 58 69 62
WIND DIR      SW  S  S SW SW SW SW  W  W  W  W  W  W  W NW  W  W  W  W  W  W  W
WIND SPD       6  4  5  6  6  8 10 12 11  5  3  3  3  3  4  4  4  3  3  3  3  3
WIND GUST                          23                                          
CLOUDS        FW SC SC SC FW FW FW FW SC B1 SC FW FW FW FW FW SC SC SC FW FW FW
CLOUDS(%)     22 43 42 26 13 14 19 16 33 54 36 16 13  7  8 14 28 29 30 17 11 20
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0          10           5           5           5
MIX HGT        4 <1 <1 <1 <1 <1  4  9  9 <1 <1 <1 <1 <1  6 10 11 <1            
T WIND DIR    SW  S  S  S SW SW  W  W  W NW  E  W  W  W NW NW  W SW            
T WIND SPD    11  5  5  5  6  6 25 20 20  2  1  2  3  3 13 10  9  3            
DISPERSION       VP PR PR PR             PR VP VP VP             VP VP VP VP   
ADI           59  4  4  3  3  7119109109  2  1  1  2  3 94113107  2            
MAX LVORI      1  2  2  2  3  3  1  1  1  2  2  3  3  3  1  1  1  2            
STABILITY      B  E  E  F  F  B  B  C  C  E  G  G  G  A  A  A  A  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            29.46 29.41 29.38 29.28 29.30 29.30 29.32 29.22            


Date           04/24Sat 04/25/26Sun 04/26/26Mon 04/27/26Tue 04/28/26
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       86      59      83      54      72      48      73      54      75
TEMP          84 78 64 61 80 72 60 55 69 66 53 51 70 67 58 56 69 69
DEWPT         43 48 49 51 55 57 56 53 50 47 47 46 47 48 49 53 58 56
RH            24 35 58 70 42 59 87 93 51 50 80 83 44 50 72 90 68 63
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC SC B1 B2 B2 B1 B1 B1 SC SC B1 SC SC B1 B2 B1
POP 12HR           10      10      70      70      30      20      20      40      60
RAIN SHWRS                SC NM NM SC SC SC IS IS IS IS SC SC NM SC
TSTMS                        IS 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