Alert archive / Arizona / Areal Flood Warnings in 2017

Areal Flood Warning 1, NWS Tucson, AZ

August 13, 2017Pinal County, Arizona

NWS Tucson, AZ issued this areal flood warning at Aug 13, 2017, 8:10 AM MST for Pinal County, Arizona. 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: Aug 13, 2017, 8:10 AM MST (15:10 UTC)
Expired: Aug 13, 2017, 5:00 PM MST
In force: 9 hr
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 15:10 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 nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 3.2 hours before the alert went out and 82 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 155 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: -27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood warning went out at Aug 13, 2:47 AM MST, 5 hours 23 minutes earlier.

Area forecast discussion, Aug 13, 2:47 AM MST, 5 hours 23 minutes before

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The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 5:38 PM MST	Special Weather Statement	TWC	Cochise	52 min
Aug 12, 5:55 PM MST	Severe Thunderstorm Warning	TWC	Cochise	35 min
Aug 12, 6:04 PM MST	Special Weather Statement	TWC	Cochise	26 min
Aug 12, 6:10 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr
Aug 12, 6:11 PM MST	Special Weather Statement	TWC	Pima	34 min
Aug 12, 6:33 PM MST	Special Weather Statement	TWC	Cochise	27 min
Aug 12, 6:50 PM MST	Areal Flood Advisory	TWC	Cochise	85 min
Aug 12, 6:50 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	40 min
Aug 12, 10:18 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 12, 11:08 PM MST	Areal Flood Advisory	TWC	Graham	2 hr
Aug 13, 12:11 AM MST	Areal Flood Advisory	TWC	Graham, Pinal	2 hr
Aug 13, 12:57 AM MST	Flash Flood Warning	TWC	Pinal	2 hr
Aug 13, 1:06 AM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Aug 13, 1:07 AM MST	Areal Flood Advisory	TWC	Pinal	3 hr
Aug 13, 1:33 AM MST	Flash Flood Warning	TWC	Pima	117 min
Aug 13, 2:02 AM MST	Flash Flood Warning	TWC	Pinal	118 min
Aug 13, 3:28 AM MST	Flash Flood Warning	TWC	Pima	3 hr
Aug 13, 12:16 PM MST	Special Weather Statement	TWC	Santa Cruz	29 min
Aug 13, 12:28 PM MST	Special Weather Statement	TWC	Cochise	47 min
Aug 13, 12:46 PM MST	Special Weather Statement	TWC	Santa Cruz	29 min
Aug 13, 12:55 PM MST	Special Weather Statement	TWC	Santa Cruz	35 min
Aug 13, 1:15 PM MST	Special Weather Statement	TWC	Cochise	45 min
Aug 13, 2:15 PM MST	Severe Thunderstorm Warning	TWC	Pima	30 min
Aug 13, 3:18 PM MST	Special Weather Statement	TWC	Santa Cruz	27 min

Nearby

Areal Flood Warnings in Arizona, 2017 Every areal flood warning in 2017

Sources

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