Alert archive / Arizona / Mesoscale Discussions in 2019

Mesoscale Discussion 2172

November 29, 20194 counties in Arizona

The Storm Prediction Center issued this mesoscale discussion at Nov 29, 2019, 1:06 AM MST for 4 counties in Arizona. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Nov 29, 2019, 1:06 AM MST (08:06 UTC)
Expired: Nov 29, 2019, 7:00 AM MST
In force: 6 hr
Issued by: the Storm Prediction Center

Counties Coconino County, AZ, Gila County, AZ, Mohave County, AZ, Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 45 km from the middle of the area, began a volume at 08:09 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, 8.1 hours before the alert went out and 49 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 101 kt
0-1 km storm-relative helicity: 451 m²/s²
0-3 km storm-relative helicity: 550 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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
Nov 29, 3:52 AM MST	Mesoscale Discussion	SPC	Pima, Pinal	83 min

Nearby

Mesoscale Discussions in Arizona, 2019 Every mesoscale discussion in 2019

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.