Alert archive / Arizona / Hard Freeze Warnings in 2011

Hard Freeze Warning 7, NWS Tucson, AZ

February 4, 2011Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this hard freeze warning at Feb 4, 2011, 2:41 AM MST for Pima County, Pinal County, Arizona. It took effect at Feb 5, 2011, 12:00 AM MST. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 4, 2011, 2:41 AM MST (09:41 UTC)
In effect from: Feb 5, 2011, 12:00 AM MST
Expired: Feb 5, 2011, 9:00 AM MST
In force: 9 hr
Issued by: NWS Tucson, AZ

Counties Pima County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 88 km from the middle of the area, began a volume at 09:42 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.

What forecasters said that day

The local office's own words before this hard freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this hard freeze warning went out at Feb 3, 2:00 PM MST, 12 hours 41 minutes earlier.

Area forecast discussion, Feb 3, 2:00 PM MST, 12 hours 41 minutes before

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Hazardous weather outlook, Feb 3, 2:19 PM MST, 12 hours 22 minutes before

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Nearby

Hard Freeze Warnings in Arizona, 2011 Every hard freeze warning in 2011

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.