National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sun Apr 27 2025

WVZ043-272000-
RAWS 465401
37.53N  81.00W Elev. 2725 ft
331 AM EDT Sun Apr 27 2025

Date             Sun 04/27/25            Mon 04/28/25            Tue 04/29/25
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 64          42          74          51          79
TEMP          40 40 50 59 63 56 49 46 43 46 60 70 73 66 59 55 52 55 70 77 78 71
DEWPT         34 32 31 30 30 32 32 32 32 34 38 41 44 44 43 42 42 45 51 53 55 54
MAX/MIN RH                   29          64          34          70          43
RH            79 73 48 33 29 40 52 58 65 63 44 35 35 45 55 61 69 69 51 43 45 55
WIND DIR      NW  N  N  N  N  N NE  E  E SE SE  S  S  S  S  S  S  S SW  W  W SW
WIND SPD       5  5  6  6  5  4  2  2  3  3  5  5  5  5  4  3  2  2  5  6  6  5
CLOUDS        B1 B1 SC SC FW FW FW FW FW FW FW FW FW FW FW CL FW FW SC B1 B1 SC
CLOUDS(%)     60 55 41 39 18 18  8  8 10  6  8  7 13 17  8  4 10 16 34 53 58 50
VSBY          10 10 10 10 10 10 10 10 10 10 10                                 
POP 12HR                      0           0           0           5          40
RAIN SHWRS                                                             IS SC SC
TSTMS                                                                  IS IS IS
MIX HGT       <1  1  2  3  3 <1 <1 <1 <1 <1  3  5  5 <1 <1 <1 <1 <1  4  6  3 <1
T WIND DIR    NW  N  N  N  N NW  N  E SE SE  S SW  S  S  S  S SE  S  W  W  W SW
T WIND SPD    16 10 16 10  8  3  2  2  3  5 14  9  8 12  6  4  2  2 13 12 10  6
DISPERSION    PR             VP VP VP VP             PR VP VP VP             PR
ADI           11 16 48 41 36  2  1  1  2  6 56 56 54  6  3  2  1  2 69 84 33  5
MAX LVORI      4  3  1  1  1  2  2  3  3  3  1  1  1  2  3  3  3  3  1  1  1  3
STABILITY      E  A  B  B  A  F  G  G  G  A  A  A  A  F  F  G  G  A  A  B  C  E
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            27.87 27.84 27.88 27.90 27.93 27.88 27.88 27.87 27.87 27.79


Date          Wed 04/30/25Thu 05/01/25Fri 05/02/25Sat 05/03/25
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       60      77      59      78      60      70      47      65
TEMP          63 62 74 70 62 62 77 71 64 61 69 62 54 50 62 58
DEWPT         56 58 56 56 54 57 56 56 55 56 52 49 46 44 37 35
RH            78 87 53 61 75 84 48 59 73 84 55 62 74 80 39 42
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 SC SC SC FW FW
POP 12HR           40      60      40      60      40      60      30      10
RAIN SHWRS    SC SC SC NM SC SC SC NM SC SC NM NM SC IS      
TSTMS         IS IS    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