Air Freezing Index- USA Method (Base 320 Fahrenheit)
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Air Freezing Index- USA Method (Base 320 Fahrenheit) Air Freezing Index Return Periods (0F-Days) & Associated Probabilities (%) Mean Lat. Long. 1.1 1.2 2 2.5 3.3 5 10 20 25 50 100 Station Elev. Annual State and Station Name (Deg. - (Deg. - Year Year Year Year Year Year Year Year Year Year Year Number (feet) Temp. Min.) Min.) (10%) (20%) (50%) (60%) (70%) (80%) (90%) (95%) (96%) (98%) (99%) (0 F) Alabama ANDALUSIA 1 NW 10252 N3119 W08630 260 64.6 1 2 8 10 13 17 24 31 33 39 46 ANNISTON FAA AP 10272 N3335 W08551 599 62.0 2 4 14 18 24 31 44 56 60 71 83 BAY MINETTE 10583 N3053 W08747 268 67.0 * 0 1 3 4 7 12 18 20 26 33 BELLE MINA 2 N 10655 N3442 W08653 600 60.5 6 12 34 44 56 72 99 124 133 157 181 BIRMINGHAM WSO 10831 N3334 W08645 620 62.2 3 6 18 23 30 38 52 66 70 83 96 BREWTON 3 SSE 11084 N3104 W08703 85 65.6 * 0 2 3 5 8 13 19 21 28 35 CHATOM 3 N 11566 N3130 W08815 285 65.5 * 0 3 5 7 10 17 23 26 33 40 CLANTON 11694 N3251 W08638 580 61.9 3 6 17 22 27 34 46 56 60 70 80 DAYTON 12188 N3221 W08739 225 64.2 3 5 13 16 20 25 32 39 41 48 54 DEMOPOLIS LOCK AND DAM 12245 N3231 W08750 100 63.3 2 4 13 16 21 27 37 46 49 58 66 EUFAULA 12730 N3159 W08506 220 64.6 1 3 8 10 13 17 22 27 29 34 38 EVERGREEN 12758 N3126 W08656 216 64.8 0 2 7 10 13 17 25 33 36 44 51 FAIRHOPE 2 NE 12813 N3033 W08753 23 67.4 * * 1 2 3 5 8 12 14 18 23 FAYETTE 12883 N3341 W08749 365 61.5 5 9 21 26 32 39 51 61 64 74 83 FRISCO CITY 13105 N3126 W08724 410 65.3 0 1 7 9 12 17 25 33 36 44 53 GADSDEN STEAM PLANT 13154 N3402 W08600 565 60.8 5 9 23 29 36 45 59 73 77 89 101 HALEYVILLE 13620 N3414 W08737 950 59.6 13 21 47 57 68 83 105 126 132 150 168 HEADLAND 13761 N3121 W08520 370 65.5 0 1 6 9 12 16 23 31 33 40 47 HIGHLAND HOME 13816 N3157 W08619 594 64.3 2 4 12 15 20 25 34 43 46 54 62 LAFAYETTE 14502 N3254 W08524 830 62.7 1 4 12 15 20 26 35 45 48 57 66 MARION JUNCTION 2 NE 15121 N3228 W08713 200 63.7 2 4 12 15 19 25 34 42 45 53 61 MOBILE WSO 15478 N3041 W08815 211 67.5 * 0 2 3 4 7 12 18 20 26 33 MUSCLE SHOALS FAA AP 15749 N3445 W08737 536 60.7 8 16 39 49 61 76 101 125 132 154 175 ONEONTA 16121 N3357 W08629 870 59.8 9 16 37 45 55 68 89 107 113 130 146 OZARK 6 NNW 16218 N3131 W08541 470 65.9 0 1 4 6 9 12 19 25 28 34 41 ROBERTSDALE 1 E 16988 N3032 W08740 155 66.7 * 0 1 3 4 7 12 17 19 25 32 ROCK MILLS 17025 N3309 W08518 745 61.3 3 6 16 21 25 32 42 52 54 63 72 SAINT BERNARD 17157 N3412 W08647 802 59.3 13 22 46 56 67 81 102 121 127 144 160 SAND MT SUBSTA AU 17207 N3417 W08558 1195 59.5 7 14 39 49 63 81 110 138 146 173 199 SCOTTSBORO 17304 N3441 W08603 615 59.4 8 15 40 51 64 82 110 137 145 170 195 SELMA 17366 N3225 W08700 147 66.0 0 1 6 8 11 15 22 29 31 38 45 TALLADEGA 18024 N3327 W08606 565 61.7 2 5 16 21 26 34 47 59 63 74 85 THOMASVILLE 18178 N3155 W08744 405 64.2 1 3 10 14 18 24 33 43 46 55 64 TROY 18323 N3149 W08559 580 65.4 0 1 5 8 10 14 21 28 30 37 44 Footnotes: * Probability of occurrence less than indicated probability (Value=0) ** No Freezing Index Values Recorded during 1951-80 period (Value=0) 1 Prepared by NOAA - National Climatic Data Center Air Freezing Index- USA Method (Base 320 Fahrenheit) Air Freezing Index Return Periods (0F-Days) & Associated Probabilities (%) Mean Lat. Long. 1.1 1.2 2 2.5 3.3 5 10 20 25 50 100 Station Elev. Annual State and Station Name (Deg. - (Deg. - Year Year Year Year Year Year Year Year Year Year Year Number (feet) Temp. Min.) Min.) (10%) (20%) (50%) (60%) (70%) (80%) (90%) (95%) (96%) (98%) (99%) (0 F) Alabama TUSCALOOSA FAA AP 18380 N3314 W08737 170 63.4 1 4 13 17 22 30 43 56 60 73 85 UNION SPRINGS 18438 N3208 W08543 455 64.0 2 5 13 16 20 25 34 41 44 51 58 VALLEY HEAD 18469 N3434 W08537 1040 57.5 15 27 63 77 94 116 150 181 191 220 247 Arizona AJO 20080 N3222 W11252 1763 71.6 * * * * * * 0 0 0 0 0 ANVIL RANCH 20287 N3159 W11123 2750 66.3 * * 0 1 1 2 4 6 7 9 11 APACHE POWDER COMPANY 20309 N3154 W11015 3690 62.5 * 0 2 3 5 8 13 18 20 26 32 BARTLETT DAM 20632 N3349 W11138 1650 70.4 ** ** ** ** ** ** ** ** ** ** ** BETATAKIN 20750 N3641 W11032 7286 49.7 107 151 253 288 326 373 439 495 512 560 603 BLACK RIVER PUMPS 20808 N3329 W10946 6040 52.3 31 46 84 97 112 131 157 180 187 207 225 BOUSE 20949 N3357 W11401 930 69.5 * * * * 0 0 0 1 1 2 3 BUCKEYE 21026 N3322 W11235 870 70.3 ** ** ** ** ** ** ** ** ** ** ** CANELO 1 NW 21231 N3133 W11032 4985 57.2 3 5 13 16 20 24 32 39 41 47 53 CASA GRANDE 21306 N3253 W11145 1405 70.1 ** ** ** ** ** ** ** ** ** ** ** CASA GRANDE RUINS N M 21314 N3300 W11132 1419 69.3 * * * * * * * * * * 0 CHILDS 21614 N3421 W11142 2650 64.5 * * 0 1 2 3 6 9 10 14 17 CHINO VALLEY 21654 N3445 W11227 4750 54.5 4 10 36 48 65 88 128 168 181 222 264 CHIRICAHUA NAT MON 21664 N3200 W10921 5300 58.2 2 4 12 15 19 24 32 40 43 50 57 CLIFTON 21849 N3303 W10917 3460 66.0 * * 0 1 1 3 5 8 9 13 17 CORDES 22109 N3418 W11210 3773 61.0 0 1 5 7 9 13 20 28 30 38 45 DEER VALLEY 22462 N3335 W11205 1257 69.6 ** ** ** ** ** ** ** ** ** ** ** DOUGLAS B D FAA AP 22664 N3127 W10936 4098 61.6 * 0 3 4 6 10 16 23 25 33 41 DUNCAN 22754 N3244 W10906 3640 59.1 1 2 11 15 20 28 42 57 61 76 91 FLAGSTAFF WSO // 23010 N3508 W11140 7006 45.4 128 193 359 418 486 570 693 801 833 927 1013 FLORENCE 23027 N3302 W11123 1505 69.9 * * * * * * * * * * * FORT VALLEY 23160 N3516 W11144 7347 42.7 298 395 606 673 746 832 952 1051 1080 1163 1236 GANADO 23303 N3543 W10934 6340 48.4 144 203 342 388 440 503 592 668 690 755 813 GILA BEND 23393 N3257 W11243 737 72.4 * * * * * * * 0 0 0 0 HEBER RANGER STATION 23961 N3424 W11033 6590 48.4 67 100 183 212 245 286 346 397 413 458 499 HOLBROOK 24089 N3454 W11010 5069 54.0 26 51 141 181 230 298 409 516 550 653 754 JEROME 24453 N3445 W11207 5245 58.8 3 6 16 20 26 33 45 57 60 71 82 JUNIPINE 24508 N3458 W11145 5134 55.6 5 10 23 28 35 43 56 68 71 82 92 KINGMAN NO 2 24645 N3512 W11401 3539 61.7 0 1 6 8 12 17 26 36 39 50 60 LAVEEN 3 SSE 24829 N3320 W11209 1115 70.7 * * * * * * * * * * 0 Footnotes: * Probability of occurrence less than indicated probability (Value=0) ** No Freezing Index Values Recorded during 1951-80 period (Value=0) 2 Prepared by NOAA - National Climatic Data Center Air Freezing Index- USA Method (Base 320 Fahrenheit) Air Freezing Index Return Periods (0F-Days) & Associated Probabilities (%) Mean Lat. Long. 1.1 1.2 2 2.5 3.3 5 10 20 25 50 100 Station Elev. Annual State and Station Name (Deg. - (Deg. - Year Year Year Year Year Year Year Year Year Year Year Number (feet) Temp. Min.) Min.) (10%) (20%) (50%) (60%) (70%) (80%) (90%) (95%) (96%) (98%) (99%) (0 F) Arizona LEES FERRY 24849 N3652 W11136 3210 62.9 2 5 21 29 39 55 82 111 120 150 180 LEUPP 24872 N3517 W11058 4700 53.6 28 55 156 200 257 334 461 584 624 743 861 LITCHFIELD PARK 24977 N3330 W11222 1030 70.4 ** ** ** ** ** ** ** ** ** ** ** MC NARY 25412 N3404 W10951 7320 47.0 68 103 192 223 259 304 370 428 445 495 541 MESA EXPERIMENT FARM 25467 N3325 W11152 1230 69.6 ** ** ** ** ** ** ** ** ** ** ** MIAMI 25512 N3324 W11053 3560 62.9 * 0 2 3 5 8 13 20 22 28 35 MONTEZUMA CASTLE N M 25635 N3437 W11150 3180 61.2 0 1 5 8 11 16 25 35 38 49 60 MORMON FLAT 25700 N3333 W11127 1715 71.2 * * * * * * * * * * 0 NOGALES 25921 N3121 W11055 3808 60.5 * 0 2 3 4 7 11 16 17 22 27 ORACLE 2 SE 26119 N3236 W11044 4540 62.3 * 0 2 4 6 9 14 20 22 28 35 ORGAN PIPE CACTUS N M 26132 N3156 W11247 1678 69.4 * * * * * * * * * * * PARKER 26250 N3410 W11417 425 72.7 ** ** ** ** ** ** ** ** ** ** ** PAYSON 26323 N3414 W11120 4913 55.3 3 7 20 25 32 41 55 69 73 86 98 PEARCE 26353 N3154 W10949 4420 61.8 * 0 3 4 6 9 15 21 24 30 37 PETRIFIED FOREST NP 26468 N3448 W10952 5440 54.4 24 43 102 126 155 193 252 308 325 377 426 PHOENIX WSO 26481 N3326 W11201 1117 71.2 ** ** ** ** ** ** ** ** ** ** ** PRESCOTT 26796 N3434 W11228 5510 53.0 12 21 49 60 73 90 117 142 150 172 194 ROOSEVELT 1 WNW 27281 N3340 W11109 2205 67.6 * * * 0 0 0 1 2 3 4 5 SABINO CANYON 27355 N3218 W11049 2640 68.8 * * * * 0 0 0 1 1 2 3 SACATON 27370 N3304 W11145 1285 69.0 * * * 0 0 0 1 2 3 4 5 SAFFORD EXPERIMENT FRM 27390 N3249 W10941 2954 62.5 0 0 4 6 9 13 19 26 29 36 43 SAINT JOHNS 27435 N3430 W10922 5730 53.3 35 56 114 135 160 192 239 282 294 332 367 SAN CARLOS RESERVOIR 27480 N3310 W11031 2532 65.3 * * 0 1 2 4 6 10 11 14 18 SANTA RITA EXP RANGE 27593 N3146 W11051 4300 63.8 * 0 1 2 3 5 9 12 14 18 22 SEDONA RANGER STATION 27708 N3452 W11146 4320 59.9 1 3 10 13 18 23 33 43 46 55 65 SNOWFLAKE 28012 N3430 W11005 5642 51.6 36 60 130 156 188 228 290 345 362 413 460 SOUTH PHOENIX 28112 N3323 W11204 1155 69.0 * * * * * * * 0 0 0 0 SPRINGERVILLE 28162 N3408 W10917 7060 48.0 72 105 188 217 249 289 346 396 411 454 493 TEMPE 28489 N3326 W11156 1150 69.0 ** ** ** ** ** ** ** ** ** ** ** TEMPE CITRUS EXP STA 28499 N3323 W11158 1180 68.7 ** ** ** ** ** ** ** ** ** ** ** TOMBSTONE 28619 N3142 W11003 4610 63.6 * 0 1 2 4 6 10 15 16 21 27 TRUXTON CANYON 28778 N3523 W11340 3820 59.4 2 4 13 17 23 30 42 53 57 68 79 TUCSON UNIV OF ARIZONA 28815 N3215 W11057 2444 69.4 * * * * * * * * 0 0 0 TUCSON WSO 28820 N3207 W11056 2584 68.0 * * * 0 0 0 1 2 2 3 4 Footnotes: * Probability of occurrence less than indicated probability (Value=0) ** No Freezing Index Values Recorded during 1951-80 period (Value=0) 3 Prepared by NOAA - National Climatic Data Center Air Freezing Index- USA Method (Base 320 Fahrenheit) Air Freezing Index Return Periods (0F-Days) & Associated Probabilities (%) Mean Lat.