Alert archive / Arizona / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 59, NWS Phoenix, AZ

October 4, 2010Maricopa County, Pinal County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Oct 4, 2010, 2:47 PM MST for Maricopa County, 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
Oct 4, 2010, 2:47 PM MST (21:47 UTC)
Expired
Oct 4, 2010, 3:45 PM MST
In force
58 min
Issued by
NWS Phoenix, AZ
Area
Storm-based polygon

Counties Maricopa County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 29 km from the middle of the area, began a volume at 21:47 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 12:00Z, 9.8 hours before the alert went out and 234 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-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2010-10-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 236 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2010-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
236 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1310 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 4, 1:03 PM MSTSpecial Weather StatementPSRMaricopa42 min
Oct 4, 1:42 PM MSTSpecial Weather StatementPSRYuma48 min
Oct 4, 1:48 PM MSTSpecial Weather StatementPSRMaricopa57 min
Oct 4, 2:07 PM MSTDust Storm WarningPSR107 min
Oct 4, 2:25 PM MSTSevere Thunderstorm WarningPSRMaricopa, Pinal65 min
Oct 4, 2:26 PM MSTAreal Flood AdvisoryPSRLa Paz, Maricopa, Pinal, Yuma109 min
Oct 4, 2:34 PM MSTSpecial Weather StatementPSRMaricopa56 min
Oct 4, 2:39 PM MSTSpecial Weather StatementPSRLa Paz51 min
Oct 4, 2:46 PM MSTSevere Thunderstorm WarningPSRLa Paz, Maricopa, Yuma44 min
Oct 4, 2:56 PM MSTAreal Flood AdvisoryPSRLa Paz, Maricopa109 min
Oct 4, 3:19 PM MSTSpecial Weather StatementPSR41 min
Oct 4, 3:36 PM MSTSpecial Weather StatementPSRMaricopa54 min
Oct 4, 3:54 PM MSTDust Storm WarningPSR66 min
Oct 4, 3:57 PM MSTSpecial Weather StatementPSR63 min
Oct 4, 4:39 PM MSTSpecial Weather StatementPSRYuma51 min
Oct 4, 4:49 PM MSTSpecial Weather StatementPSRGila56 min
Oct 4, 2:45 PM MSTSpecial Weather StatementPSRImperial45 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2010Every severe thunderstorm 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.