Alert archive / New Mexico / Mesoscale Discussions in 2007

Mesoscale Discussion 828

May 18, 2007Greenlee County, Arizona; 7 counties in New Mexico; 6 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 18, 2007, 11:52 AM MST for Greenlee County, Arizona; 7 counties in New Mexico; 6 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 18, 2007, 11:52 AM MST (18:52 UTC)
Expired
May 18, 2007, 2:15 PM MST
In force
2 hr
Issued by
the Storm Prediction Center

Counties Greenlee County, AZ, Catron County, NM, Doña Ana County, NM, Grant County, NM, Luna County, NM, Otero County, NM, Sierra County, NM, Socorro County, NM, Brewster County, TX, Culberson County, TX, El Paso County, TX, Hudspeth County, TX, Jeff Davis County, TX, Presidio County, TX

The radar

The El Paso radar (KEPZ), 52 km from the middle of the area, began a volume at 18:52 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

Santa Teresa, NM (KEPZ), launched 12:00Z, 6.9 hours before the alert went out and 53 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, Santa Teresa, NM at 12:00Z on 2007-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 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, Santa Teresa, NM at 12:00Z on 2007-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.1939Sfc1 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
202 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
894 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
43 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, 2007Mesoscale Discussions in Texas, 2007Mesoscale Discussions in Arizona, 2007Every mesoscale discussion in 2007

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.