Alert archive / Arizona / Flash Flood Warnings in 2010

Flash Flood Warning 29, NWS Phoenix, AZ

July 31, 2010Pinal County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 31, 2010, 6:47 PM MST for Pinal County, Arizona. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 31, 2010, 6:47 PM MST (01:47 UTC)
Expired: Jul 31, 2010, 7:45 PM MST
In force: 58 min
Issued by: NWS Phoenix, 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 01:48 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

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 1.8 hours before the alert went out and 262 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: 234 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 655 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 5 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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 31, 2:40 PM MST, 4 hours 7 minutes earlier.

Area forecast discussion, Jul 31, 2:40 PM MST, 4 hours 7 minutes before

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Hazardous weather outlook, Jul 31, 5:18 AM MST, 13 hours 29 minutes before

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In the hours before

Local storm report, Jul 31, 1:53 PM MST, 4 hours 54 minutes before

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Local storm report, Jul 31, 2:37 PM MST, 4 hours 10 minutes before

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Local storm report, Jul 31, 6:01 PM MST, 46 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Nearby

Flash Flood Warnings in Arizona, 2010 Every flash flood warning in 2010

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.