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St. Francis National Forest Fire Weather Point Forecast Matrix
ARZ049-031000-
MARIANNA NFDRS SITE-LEE AR
34.76N 90.72W ELEV. 253 FT
310 PM CDT WED OCT 2 2013
DATE 10/02/13 THU 10/03/13 FRI 10/04/13 SAT
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
CDT 3HRLY 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX 68 86 68 89 67
TEMP 83 79 75 73 71 69 76 83 85 80 76 73 71 69 78 85 88 81 75 71 69 68
DEWPT 65 68 67 67 66 66 66 66 66 66 66 66 66 65 66 66 67 67 67 67 66 66
MAX/MIN RH 90 53 90 49 93
RH 53 69 76 81 85 90 70 57 53 63 72 79 83 89 67 53 50 64 75 85 90 93
WIND DIR S SE SE SE SE S S S S S S S S S S S S S S SE S S
WIND SPD 6 4 5 6 5 4 5 6 5 4 4 4 4 4 5 6 5 4 5 5 5 4
CLOUDS B2 B2 B2 B1 B1 SC SC B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2
CLOUDS(%) 72 70 70 60 60 50 50 60 60 45 45 45 45 60 60 60 60 52 52 55 55 75
POP 12HR 20 20 10 20 20
QPF 12HR 0.01 0.04 0 0.02 0.01
RAIN SHWRS NM IS IS IS IS IS IS IS IS IS IS IS IS NM
TSTMS NM IS IS IS IS IS IS IS IS NM
OBVIS PF PF PF PF PF PF PF PF
MIXHGT M AGL 68 0 1272 1493 7 5 1885 1644 0 22
MIXHGT FT AGL 224 0 4174 4897 22 17 6185 5392 0 72
MIXHGT M MSL 146 66 1351 1571 85 81 1963 1722 72 100
MIXHGT FT MSL 480 215 4433 5153 278 267 6441 5648 237 328
TRANSWIND DIR SE S S S S S S S SE S
TWIND SPD M/S 2 2 4 5 3 3 6 6 3 3
TWIND SPD MPH 5 4 10 11 8 6 13 13 6 8
VENT INDEX 564 7855 384 11778 333
CATEGORY DAY 1 3 1 4 1
500M MIXHGT T 82 78 77 81 81 80 81 81 84 82
500M TWND DIR SE S S S S S S S S S
500M TWND M/S 5 8 4 6 9 10 6 8 10 11
500M TWND MPH 11 18 10 14 21 24 13 18 24 26
DISPERSION 5 5 31 35 5 6 42 43 5 6
LAL 1 1 2 2 1 2 2 2 2 4
LASI 3 3 3 3 4 3 3 3 3 3
STABILITY E E C D F E C C E E
STAG INDEX 0 0 0 0 0
DATE 10/05 SUN 10/06/13 MON 10/07/13 TUE 10/08/13 WED 10/09/13
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
CDT 6HRLY 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN 86 58 74 49 70 48 74 50 76
TEMP 84 77 66 59 72 67 58 50 67 63 54 49 68 67 56 51 72 69
DEWPT 65 65 58 50 49 47 46 45 44 46 46 46 46 49 49 48 51 53
MIN/MAX RH 51 76 40 85 41 91 40 91 44
RH 54 66 74 73 43 48 65 83 42 55 74 91 45 53 76 91 47 57
WIND DIR S NW NW NW N NE N E SE
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT
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 SPD (MPH)......................20 FT. WIND SPEED
WIND CHILL (F)......................WIND CHILL TEMPERATURE
HEAT INDEX (F)......................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
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...
IS.............ISOLATED
SC.............SCATTERED
NM.............NUMEROUS
O..............OCCASIONAL
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
WD.............WIDESPREAD
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
+PF............PATCHY DENSE FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
MIXING HGT M (AGL)..................MIXING HEIGHT IN METERS
MIXING HGT FT (AGL).................MIXING HEIGHT IN FEET
TRANSWIND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION
TWIND SPD MS (M/S)..................TRANSPORT WIND SPEED IN METERS PER SECOND
TWIND SPD MPH (MPH).................TRANSPORT WIND SPEED IN MILES PER HOUR
VENT INDEX (M2/S)...................VENT INDEX IN METERS SQUARED PER SECOND
CATEGORY DAY........................CATEGORY DAY BASED ON VENT INDEX
EXAMPLE: 1 = <2000; 2 = >=2000 AND <4000; 3 = >=4000 AND <8000;
4 = >=8000 AND <16000; 5 = >=16000
500M MIXHGT T (F)...................SURFACE TEMPERATURE NEEDED TO CREATE MIXING
UP TO 500 METERS ABOVE THE GROUND
500M TWND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION AT 500 METERS AGL
500M TWND M/S.......................TRANSPORT WIND AT 500 METERS AGL IN M/S
500M TWND MPH.......................TRANSPORT WIND AT 500 METERS AGL IN MPH
LASI (SAME AS HAINES INDEX).........LOWER ATMOSPHERIC SEVERITY INDEX
MEASURES FIRE GROWTH POTENTIAL
EXAMPLE: 1-3 = VERY LOW; 4 = LOW; 5 = MODERATE; 6 = HIGH
STABILITY...........................STABILITY CLASS
EXAMPLE: A = VERY UNSTABLE; B = MODERATELY UNSTABLE; C = SLIGHTLY UNSTABLE
D = NEUTRAL; E = SLIGHTLY STABLE; F = MODERATELY STABLE
G = VERY STABLE
STAG INDEX..........................STAGNATION INDEX
EXAMPLE: 0 = WINDS >= 10 MPH; 1 = WINDS <= 10 MPH WITH RAIN
2 = DRY WITH DECENT WINDS
3 = DRY WITH LIGHT WINDS AND STAGNATE CONDITIONS
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
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