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Chickasaw State Forest Fire Weather Point Forecast Matrix
TNZ053-191000-
CHICKASAW STATE FOREST NFDRS SITE-CHESTER TN
35.37N 88.83W ELEV. 496 FT
223 PM CDT SAT MAY 18 2013
DATE 05/18/13 SUN 05/19/13 MON 05/20/13 TUE
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 88 69 88 70
TEMP 83 79 73 71 70 69 76 84 87 82 76 73 71 70 77 85 87 82 76 73 72 71
DEWPT 68 69 69 68 68 68 71 69 67 66 64 63 64 67 70 70 69 68 68 67 67 67
MAX/MIN RH 98 50 89 55 89
RH 60 73 87 91 95 98 83 60 50 58 67 71 79 89 78 61 55 62 75 82 86 88
WIND DIR SW S S S S S S S S S S S S S S S S S S S S S
WIND SPD 8 4 4 4 6 5 10 11 12 8 8 9 8 5 10 12 9 5 5 5 5 5
CLOUDS B1 B1 B1 B1 B1 B2 B2 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
CLOUDS(%) 65 55 55 53 53 81 81 35 35 38 38 41 41 35 35 45 45 36 36 40 40 50
POP 12HR 30 10 10 10 20
QPF 12HR 0.05 0 0 0 0
RAIN SHWRS SC SC SC SC SC IS IS IS IS SC
TSTMS SC SC SC SC SC IS IS IS IS SC
MIXHGT M AGL 676 22 1185 1246 415 173 1629 1672 995 124
MIXHGT FT AGL 2216 71 3888 4086 1361 567 5345 5486 3263 406
MIXHGT M MSL 810 162 1335 1396 558 307 1764 1814 1144 259
MIXHGT FT MSL 2658 531 4379 4579 1830 1007 5786 5951 3753 849
TRANSWIND DIR SE S S SW S S SW SW S S
TWIND SPD M/S 3 4 7 9 5 5 9 8 7 7
TWIND SPD MPH 8 10 16 20 12 12 20 19 16 17
VENT INDEX 4528 11168 4896 16326 11116
CATEGORY DAY 3 4 3 4 4
500M MIXHGT T 82 81 80 86 82 77 78 83 84 79
500M TWND DIR S SW S S S S S S S S
500M TWND M/S 6 10 7 9 14 14 8 7 13 14
500M TWND MPH 14 24 17 20 32 32 19 16 29 33
DISPERSION 5 12 53 62 11 19 60 61 8 22
LAL 3 3 1 1 1 1 1 2 2 3
LASI 3 3 4 5 4 4 3 3 4 4
STABILITY F E C C E E B C F E
STAG INDEX 0 0 0 0 0
DATE 05/21 WED 05/22/13 THU 05/23/13 FRI 05/24/13 SAT 05/25/13
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 87 69 82 64 82 61 82 61 81
TEMP 84 82 74 70 81 77 69 65 80 76 67 62 79 78 66 62 79 77
DEWPT 66 66 66 67 66 65 63 61 61 61 60 59 59 60 60 60 58 57
MIN/MAX RH 51 92 59 91 51 91 49 94 46
RH 55 59 79 92 60 67 81 90 54 60 78 90 52 55 81 93 50 50
WIND DIR S S SW SW W NW NW N N
WIND SPD 7 4 6 5 6 3 6 5 5
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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