Extreme drought (D3 category), which began in January, continued across the same sections of southeast Arizona throughout May and expanded farther westward as light rain amounts only occurred on one day during May.

Drought in UPPER SANTA CRUZ RIVER AND ALTAR VALLEYS, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in TUCSON METRO AREA, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in UPPER SAN PEDRO RIVER VALLEY, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in UPPER GILA RIVER AND ARAVAIPA VALLEYS, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in DRAGOON/MULE/HUACHUCA AND SANTA RITA MOUNTAINS, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in TOHONO O ODHAM NATION, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.

Drought in BABOQUIVARI MOUNTAINS, ARIZONA
From 01-MAY-18 00:00:00 to 31-MAY-18 23:59:00 (MST-7)
Property damage: 0.00K
Reported by: Drought Monitor

Extreme drought (D3 category), which began in January, expanded during May into western Pima County and southeast Pinal County and continued across southeast Pima County, Santa Cruz County, and far southwest Cochise County including portions of the Tohono O'odham Nation and the Baboquivari, Santa Rita and Huachuca Mountains along with the White Mountains in northern Graham and Greenlee Counties and the San Carlos Apache Tribe lands of northwestern Graham County. Light rain occurred on one day in the extreme drought area during May, with rainfall amounts between a tenth and a half an inch.  However, overall soil moisture readings generally decreased, with most areas ranked below the 15th percentile, with some areas below the 5th percentile. Wildfire activity continued in May with several human caused wildfires occurring in or near the extreme drought area.  Levels in the San Carlos Reservoir continued to fall during May, and dropped to less than 2 percent of capacity by the end of the month.