Zone Forecast Product
Issued by NWS Tucson, AZ
Issued by NWS Tucson, AZ
373 FPUS55 KTWC 052205 ZFPTWC Zone Forecast Product for Southeast Arizona National Weather Service Tucson AZ 303 PM MST Fri Jul 5 2024 AZZ501-061400- Western Pima County- Including Ajo and Organ Pipe Cactus N.M. 303 PM MST Fri Jul 5 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... .TONIGHT...Mostly clear. Lows 79 to 84. .SATURDAY...Sunny. Highs 109 to 114. .SATURDAY NIGHT...Mostly clear. Lows 79 to 84. .SUNDAY...Sunny. Highs 108 to 113. .SUNDAY NIGHT...Mostly clear. Lows 76 to 82. .MONDAY...Sunny. Highs 110 to 115. .MONDAY NIGHT...Clear. Lows 78 to 84. .TUESDAY...Sunny. Highs 111 to 116. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows 79 to 85. Highs 107 to 113. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 81 to 86. .FRIDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Highs 107 to 112. Chance of precipitation 30 percent. $$ AZZ502-061400- Tohono O`odham Nation- Including Sells 303 PM MST Fri Jul 5 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... .TONIGHT...Mostly clear. Lows 78 to 83. .SATURDAY...Mostly sunny. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 107 to 112. .SATURDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 78 to 83. .SUNDAY...Sunny. Highs 107 to 112. .SUNDAY NIGHT...Mostly clear. Lows 76 to 81. .MONDAY...Sunny. Highs 108 to 113. .MONDAY NIGHT...Clear. Lows 78 to 83. .TUESDAY...Sunny. Highs 109 to 114. .TUESDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 78 to 83. .WEDNESDAY...Mostly sunny. Highs 107 to 112. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 79 to 84. .THURSDAY AND THURSDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 106 to 111. Lows 79 to 84. .FRIDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 105 to 110. $$ AZZ503-061400- Upper Santa Cruz River Valley/Altar Valley- Including Nogales 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows 67 to 73. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a 30 percent chance of showers and thunderstorms in the afternoon. Highs 99 to 105. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 67 to 73. .SUNDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 99 to 105. .SUNDAY NIGHT...Mostly clear. Lows 67 to 73. .MONDAY...Sunny. Highs 101 to 107. .MONDAY NIGHT...Mostly clear with a 10 percent chance of showers and thunderstorms. Lows 70 to 75. .TUESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 101 to 107. .TUESDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 69 to 75. .WEDNESDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 100 to 106. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 69 to 75. .THURSDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 99 to 105. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 69 to 75. .FRIDAY...Showers likely and chance of thunderstorms. Highs 97 to 103. Chance of precipitation 60 percent. $$ AZZ504-061400- Tucson Metro Area- Including Tucson, Green Valley, Marana, and Vail 303 PM MST Fri Jul 5 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... .TONIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 74 to 80. West wind 5 to 15 mph becoming south 5 to 10 mph after midnight. .SATURDAY...Mostly sunny. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 102 to 110. South wind around 10 mph becoming northwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 74 to 80. Northwest wind 5 to 15 mph becoming southwest 5 to 10 mph after midnight. .SUNDAY...Mostly sunny. Highs 102 to 110. Southwest wind 5 to 10 mph becoming northwest 10 to 15 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows 74 to 80. West wind 10 to 15 mph becoming southwest after midnight. .MONDAY...Sunny. Highs 105 to 111. .MONDAY NIGHT...Clear. Lows 76 to 82. .TUESDAY...Mostly sunny with a 30 percent chance of showers and thunderstorms. Highs 104 to 112. .TUESDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 75 to 81. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 104 to 110. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 75 to 81. Highs 103 to 109. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 76 to 82. .FRIDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 102 to 108. $$ AZZ505-061400- South Central Pinal County- Including Picacho Peak State Park 303 PM MST Fri Jul 5 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... .TONIGHT...Mostly clear. Lows 77 to 82. .SATURDAY...Mostly sunny. Highs 107 to 112. .SATURDAY NIGHT...Mostly clear. Lows 77 to 82. .SUNDAY...Mostly sunny. Highs 105 to 111. .SUNDAY NIGHT...Mostly clear. Lows 77 to 82. .MONDAY...Sunny. Highs 107 to 113. .MONDAY NIGHT...Mostly clear. Lows 78 to 83. .TUESDAY...Sunny. Highs 107 to 113. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows 77 to 82. Highs 107 to 112. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 78 to 83. .THURSDAY...Mostly sunny. Highs 107 to 112. .THURSDAY NIGHT AND FRIDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 79 to 84. Highs 105 to 110. $$ AZZ506-061400- Southeast Pinal County- Including Mammoth and Oracle 303 PM MST Fri Jul 5 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... .TONIGHT...Mostly clear. Lows 74 to 79. .SATURDAY...Mostly sunny. Highs 102 to 108. .SATURDAY NIGHT...Mostly clear. Lows 74 to 79. .SUNDAY...Mostly sunny. Highs 100 to 106. .SUNDAY NIGHT...Mostly clear. Lows 74 to 79. .MONDAY...Sunny. Highs 103 to 109. .MONDAY NIGHT...Mostly clear. Lows 76 to 81. .TUESDAY...Partly cloudy. Highs 102 to 108. .TUESDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 75 to 80. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy. Highs 101 to 107. .WEDNESDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 76 to 81. Chance of precipitation 30 percent. .THURSDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 101 to 107. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 76 to 81. .FRIDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 100 to 106. $$ AZZ507-061400- Upper San Pedro River Valley- Including Sierra Vista and Benson 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows 67 to 72. .SATURDAY...Partly cloudy in the morning, then a 30 percent chance of showers and thunderstorms in the afternoon. Highs 97 to 103. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 67 to 72. .SUNDAY...Mostly sunny with a 30 percent chance of showers and thunderstorms. Highs 96 to 102. .SUNDAY NIGHT...Mostly clear. Lows 68 to 73. .MONDAY...Sunny. Highs 99 to 105. .MONDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 69 to 74. .TUESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 98 to 104. .TUESDAY NIGHT...Partly cloudy with a 40 percent chance of showers and thunderstorms. Lows 68 to 73. .WEDNESDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 97 to 103. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 68 to 73. .THURSDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 97 to 103. .THURSDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 69 to 74. .FRIDAY...Showers likely and chance of thunderstorms. Highs 95 to 101. Chance of precipitation 60 percent. $$ AZZ508-061400- Eastern Cochise County below 5000 feet- Including Willcox and Douglas 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly cloudy with a 20 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 67 to 72. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a 30 percent chance of showers and thunderstorms in the afternoon. Highs 96 to 101. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 66 to 71. .SUNDAY...Mostly sunny. Highs 98 to 103. .SUNDAY NIGHT...Mostly clear. Lows 67 to 72. .MONDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 100 to 105. .MONDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 67 to 72. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 97 to 102. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 66 to 71. .WEDNESDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 97 to 102. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 68 to 73. .THURSDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 97 to 102. .THURSDAY NIGHT...Showers likely and chance of thunderstorms. Lows 68 to 73. Chance of precipitation 60 percent. .FRIDAY...Showers likely and chance of thunderstorms. Highs 96 to 101. Chance of precipitation 60 percent. $$ AZZ509-061400- Upper Gila River Valley- Including Clifton and Safford 303 PM MST Fri Jul 5 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... .TONIGHT...Mostly clear. Lows 70 to 76. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 97 to 105. .SATURDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 69 to 77. .SUNDAY...Breezy. Mostly sunny. Highs 98 to 106. West wind 15 to 25 mph in the afternoon. .SUNDAY NIGHT...Breezy. Mostly clear. Lows 70 to 76. Northwest wind 15 to 25 mph in the evening. .MONDAY...Sunny. Highs 99 to 107. .MONDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 70 to 76. .TUESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 96 to 104. .TUESDAY NIGHT...Partly cloudy with a 40 percent chance of showers and thunderstorms. Lows 69 to 75. .WEDNESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 96 to 104. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 71 to 77. .THURSDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 96 to 104. .THURSDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 71 to 77. .FRIDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 95 to 103. $$ AZZ510-061400- White Mountains of Graham and Greenlee Counties- Including Hannagan Meadow 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly clear. Lows 58 to 70. .SATURDAY...Partly cloudy in the morning, then a 20 percent chance of showers and thunderstorms in the afternoon. Highs 86 to 96. .SATURDAY NIGHT...Mostly clear. Lows 59 to 71. .SUNDAY...Mostly sunny. Highs 89 to 97. .SUNDAY NIGHT...Mostly clear. Lows 60 to 70. .MONDAY...Partly cloudy. Highs 88 to 98. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows 58 to 70. .TUESDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 85 to 95. .TUESDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 59 to 69. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 85 to 95. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 60 to 70. .THURSDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 85 to 95. .THURSDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 61 to 71. .FRIDAY...Showers likely and chance of thunderstorms. Highs 84 to 94. Chance of precipitation 60 percent. $$ AZZ511-061400- Galiuro and Pinaleno Mountains- Including Mount Graham 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 65 to 71. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 86 to 96. .SATURDAY NIGHT...Mostly clear. A 10 percent chance of showers and thunderstorms in the evening. Lows 66 to 72. .SUNDAY...Breezy. Mostly sunny. Highs 85 to 95. Northwest wind 15 to 25 mph in the afternoon. .SUNDAY NIGHT...Breezy. Mostly clear. Lows 66 to 72. Northwest wind 15 to 25 mph in the evening. .MONDAY...Sunny. Highs 88 to 98. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows 66 to 72. .TUESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 86 to 96. .TUESDAY NIGHT...Partly cloudy with a 40 percent chance of showers and thunderstorms. Lows 65 to 71. .WEDNESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 86 to 96. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 67 to 73. .THURSDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 86 to 96. .THURSDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 67 to 73. .FRIDAY...Showers likely and chance of thunderstorms. Highs 84 to 94. Chance of precipitation 60 percent. $$ AZZ512-061400- Chiricahua Mountains- Including Chiricahua NM 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly cloudy with a 20 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 63 to 69. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a 30 percent chance of showers and thunderstorms in the afternoon. Highs 85 to 95. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 62 to 68. .SUNDAY...Partly cloudy. Highs 89 to 97. .SUNDAY NIGHT...Mostly clear. Lows 64 to 70. .MONDAY...Partly cloudy. Highs 89 to 99. .MONDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 64 to 70. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 87 to 97. .TUESDAY NIGHT...Showers likely and chance of thunderstorms. Lows 63 to 69. Chance of precipitation 60 percent. .WEDNESDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 87 to 97. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 65 to 71. .THURSDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 87 to 97. .THURSDAY NIGHT...Showers likely and chance of thunderstorms. Lows 65 to 71. Chance of precipitation 60 percent. .FRIDAY...Showers likely and chance of thunderstorms. Highs 86 to 94. Chance of precipitation 60 percent. $$ AZZ513-061400- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including Bisbee, Canelo Hills, and Madera Canyon 303 PM MST Fri Jul 5 2024 .TONIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows 64 to 70. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a 30 percent chance of showers and thunderstorms in the afternoon. Highs 89 to 97. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows 63 to 69. .SUNDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 89 to 97. .SUNDAY NIGHT...Mostly clear. Lows 66 to 71. .MONDAY...Partly cloudy. Highs 92 to 100. .MONDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 67 to 72. .TUESDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 91 to 99. .TUESDAY NIGHT...Partly cloudy with a 50 percent chance of showers and thunderstorms. Lows 66 to 71. .WEDNESDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 90 to 98. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows 67 to 72. .THURSDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 89 to 97. .THURSDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and thunderstorms. Lows 67 to 72. .FRIDAY...Showers likely and chance of thunderstorms. Highs 88 to 96. Chance of precipitation 60 percent. $$ AZZ514-061400- Catalina and Rincon Mountains- Including Mount Lemmon and Summerhaven 303 PM MST Fri Jul 5 2024 .TONIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 66 to 72. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a 10 percent chance of showers and thunderstorms in the afternoon. Highs 86 to 94. .SATURDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 66 to 72. .SUNDAY...Mostly sunny. Highs 84 to 92. .SUNDAY NIGHT...Mostly clear. Lows 67 to 73. .MONDAY...Sunny. Highs 87 to 95. .MONDAY NIGHT...Mostly clear. Lows 68 to 74. .TUESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 86 to 94. .TUESDAY NIGHT...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows 67 to 73. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 86 to 94. .WEDNESDAY NIGHT...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows 67 to 73. .THURSDAY...Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs 85 to 93. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 68 to 74. .FRIDAY...Showers likely and chance of thunderstorms. Highs 84 to 92. Chance of precipitation 60 percent. $$ AZZ515-061400- Baboquivari Mountains- Including Kitt Peak 303 PM MST Fri Jul 5 2024 .TONIGHT...Partly cloudy. A 10 percent chance of showers and thunderstorms in the evening. Lows 71 to 76. .SATURDAY...Partly cloudy in the morning, then a 20 percent chance of showers and thunderstorms in the afternoon. Highs 94 to 100. .SATURDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 70 to 75. .SUNDAY...Mostly sunny. Highs 94 to 100. .SUNDAY NIGHT...Clear. Lows 70 to 75. .MONDAY...Sunny. Highs 96 to 102. .MONDAY NIGHT...Clear. Lows 72 to 77. .TUESDAY...Partly cloudy. Highs 96 to 102. .TUESDAY NIGHT...Partly cloudy with a 10 percent chance of showers and thunderstorms. Lows 73 to 78. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs 94 to 101. Lows 73 to 78. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows 72 to 77. .FRIDAY...Partly cloudy with a 50 percent chance of showers and thunderstorms. Highs 92 to 98. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson