Alert archive / Arizona / Mesoscale Discussions in 2018

Mesoscale Discussion 1278

August 12, 20185 counties in Arizona

The Storm Prediction Center issued this mesoscale discussion at Aug 12, 2018, 3:15 PM MST for 5 counties in Arizona. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Aug 12, 2018, 3:15 PM MST (22:15 UTC)
Expired: Aug 12, 2018, 4:45 PM MST
In force: 90 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Gila County, AZ, La Paz County, AZ, Maricopa County, AZ, Pinal County, AZ, Yavapai County, AZ

The radar

The Phoenix radar (KIWA), 85 km from the middle of the area, began a volume at 22:16 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 336Aug 12, 3:40 PM MST

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 3:40 PM MST	Severe Thunderstorm Watch	SPC	Gila, La Paz, Maricopa, Pinal, Yavapai, Yuma	7 hr

Nearby

Mesoscale Discussions in Arizona, 2018 Every mesoscale discussion in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.