EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE WAKEFIELD VA
620 AM EDT WED APR 25 2018
VAZ081-252100-
JAMES RIVER NWR RAWS-PRINCE GEORGE VA
37.25N 77.25W ELEV. 50 FT
620 AM EDT WED APR 25 2018
DATE WED 04/25/18 THU 04/26/18 FRI 04/27/18
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 68 51 74 54 74
TEMP 60 64 67 67 63 59 56 53 56 67 72 73 66 60 58 56 58 68 73 73 67
DEWPT 60 60 58 56 55 53 51 48 48 45 45 45 49 51 52 52 55 53 51 51 51
MIN/MAX RH 68 84 35 90 44
RH 99 87 73 68 75 80 84 83 75 45 38 37 53 73 80 86 89 59 47 46 56
WIND DIR E SW W NW NW NW NW NW NW NW W SW SW SE E E SE S SW SW NE
WIND DIR DEG 08 24 28 31 30 31 30 32 31 33 26 24 22 12 09 10 11 19 23 21 02
WIND SPD 2 3 4 5 4 4 4 4 4 4 3 3 2 3 2 3 3 5 3 5 2
CLOUDS OV OV B2 B2 B2 B2 B1 SC SC FW SC B1 B2 B2 OV OV B2 B1 B1 B1 B1
CLOUDS(%) 100 94 87 86 85 70 59 46 33 23 38 64 79 87 91 94 82 58 55 62 58
VSBY 1 7 7 7 7 7 7 7 7 7 7 7 7 7 6 6 7 7 7 7 7
POP 12HR 50 20 5 70 30
QPF 12HR 0.19 0 0 0.23 0.02
SNOW 12HR 00-00 00-00 00-00
DRIZZLE S
RAIN S
RAIN SHWRS C C C S S L L C C S S
TSTMS S
OBVIS PF
LAL 2 2 1 1 1 1 1 1 1 1
HAINES 3 3 3 3 4 4 4 3 4 4
MIX HGT 3000 3400 1600 2100 5900 6200 1900 800 5900 6300
T WIND DIR SW W NW NW NW SW SE S SW SW
T WIND SPD 4 8 6 13 8 9 8 9 13 11
SMOKE DISP PR PR PR PR FR FR PR PR GD GD
ADI 14 20 7 33 44 46 5 8 49 46
MAX LVORI 8 4 5 5 2 2 5 5 3 3
STABILITY D C B F F B B D F B
CEILING 300 1000 2700 4700 4600 3200 3200 1000 1700
PRESSURE 29.64 29.57 29.62 29.68 29.77 29.75 29.75 29.63 29.55 29.54
DATE SAT 04/28/18 SUN 04/29/18 MON 04/30/18 TUE 05/01/18
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 53 74 49 69 45 72 49 79
TEMP 57 58 71 64 54 52 67 60 50 50 69 63 53 54 76 71
DEWPT 50 49 47 47 44 44 40 41 39 41 40 44 43 47 51 53
MAX/MIN RH 83 39 82 35 80 33 85 39
RH 77 72 43 54 70 75 37 50 67 72 34 49 67 77 42 53
WIND DIR S W W W NW N NW N NW NW NW S SW SW SW S
WIND SPD 2 2 3 3 3 4 6 3 2 3 3 3 3 3 6 5
AVG CLOUDS SC SC FW FW SC FW FW FW FW CL CL CL CL CL FW FW
POP 12HR 5 5 0 0 0 0 0 5
EXPERIMENTAL ONLY...THIS PRODUCT IS FOR PLANNING AND REVIEW PURPOSES ONLY AND
IS NOT TO BE SUBSTITUTED FOR AN OFFICIAL FIRE WEATHER SPOT
FORECAST.
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 HUMIDITY
RH(%)...............................RELATIVE HUMIDITY
WIND DIR(8 POINT COMPASS)...........20 FT. WIND DIRECTION
WIND DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES
RELATIVE TO DUE NORTH.
EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH;
27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH
WIND SPD(MPH).......................20 FT. WIND SPEED
WIND GUST(MPH)......................20 FT. WIND GUST
WIND CHILL..........................WIND CHILL TEMPERATURE
HEAT INDX...........................HEAT INDEX
CLOUDS(CAT).........................CLOUD COVER CATEGORY
EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;
B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST
CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE
VSBY................................VISIBILITY VALUE IN STATUTE MILES
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR(IN)........................LIQUID EQUIVALENT PRECIPITATION AMOUNT
WEATHER...
TYPE...
RAIN...........RAIN
RAIN SHWRS.....RAIN SHOWERS
TSTMS..........THUNDERSTORMS
DRIZZLE........DRIZZLE
SNOW...........SNOW
SNOWSHWRS......SNOW SHOWERS
SLEET..........SLEET
FLURRIES.......FLURRIES
FRZG RAIN......FREEZING RAIN
FRZG DRZL......FREEZING DRIZZLE
COVERAGE...
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
O..............OCCASIONAL
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
AF.............VOLCANIC ASHFALL
LAL(CAT)............................LIGHTNING ACTIVITY LEVEL
HAINES(CAT).........................HAINES INDEX
MIX HGT(FT AGL).....................MIXING HEIGHT
T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION
T WIND SPD(MPH).....................TRANSPORT WIND SPEED
SMOKE DISPERSION....................SMOKE DISPERSION CATEGORY
VALUES: VP = VERY POOR; PR = POOR; FR = FAIR; GD = GOOD
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
CEILING (FT)........................CEILING
PRESSURE (INCHES MERCURY)...........STATION PRESSURE
MAX LVORI (INDEX)...................LOW VISIBILITY OCCURRENCE RISK INDEX
STABILITY (CAT).....................PASQUILL TURNER STABILITY
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
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 DIR............................20 FT. WIND DIRECTION
WIND SPD(MPH).......................20 FT. WIND SPEED
AVG CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
WEATHER...
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS
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