Alert archive / Utah / Mesoscale Discussions in 2022

Mesoscale Discussion 1849

September 30, 20225 counties in Colorado; 7 counties in Utah

The Storm Prediction Center issued this mesoscale discussion at Sep 30, 2022, 12:02 PM MDT for 5 counties in Colorado; 7 counties in Utah. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Sep 30, 2022, 12:02 PM MDT (18:02 UTC)
Expired
Sep 30, 2022, 2:00 PM MDT
In force
118 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch unlikely
Chance of a watch
20%

Counties Delta County, CO, Dolores County, CO, Mesa County, CO, Montrose County, CO, San Miguel County, CO, Emery County, UT, Garfield County, UT, Grand County, UT, Kane County, UT, Piute County, UT, San Juan County, UT, Wayne County, UT

The radar

The Grand Junction radar (KGJX), 180 km from the middle of the area, began a volume at 18:03 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

Grand Junction, CO (KGJT), launched 12:00Z, 6.0 hours before the alert went out and 160 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, Grand Junction, CO at 12:00Z on 2022-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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, Grand Junction, CO at 12:00Z on 2022-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 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
11 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
1764 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
254 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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Nearby

Mesoscale Discussions in Utah, 2022Mesoscale Discussions in Colorado, 2022Every mesoscale discussion in 2022

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.