Alert archive / New Mexico / Mesoscale Discussions in 2004

Mesoscale Discussion 2157

September 3, 20045 counties in Arizona; 6 counties in New Mexico

The Storm Prediction Center issued this mesoscale discussion at Sep 3, 2004, 12:27 PM MST for 5 counties in Arizona; 6 counties in New Mexico. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Sep 3, 2004, 12:27 PM MST (19:27 UTC)
Expired
Sep 3, 2004, 2:30 PM MST
In force
2 hr
Issued by
the Storm Prediction Center

Counties Apache County, AZ, Cochise County, AZ, Graham County, AZ, Greenlee County, AZ, Santa Cruz County, AZ, Catron County, NM, Cibola County, NM, Grant County, NM, Hidalgo County, NM, McKinley County, NM, San Juan County, NM

The radar

The Flagstaff radar (KFSX), 177 km from the middle of the area, began a volume at 19:31 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, 7.5 hours before the alert went out and 236 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, Phoenix, AZ at 12:00Z on 2004-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 379 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 12:00Z on 2004-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
379 J/kg
Mixed-layer CIN
-189 J/kg
Mixed-layer LCL
2037 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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Nearby

Mesoscale Discussions in New Mexico, 2004Mesoscale Discussions in Arizona, 2004Every mesoscale discussion in 2004

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.