Alert archive / New Mexico / Mesoscale Discussions in 2021
Mesoscale Discussion 939
The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2021, 6:17 PM MDT for Las Animas County, Colorado; 4 counties in New Mexico. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2021, 6:17 PM MDT (00:17 UTC)
- Expired
- Jun 12, 2021, 8:15 PM MDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 262
Counties Las Animas County, CO, Colfax County, NM, Guadalupe County, NM, Mora County, NM, San Miguel County, NM
The radar
The Cannon AFB radar (KFDX), 194 km from the middle of the area, began a volume at 00:17 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
Albuquerq/Krtlnd, NM (KABQ), launched 00:00Z, 0.3 hours before the alert went out and 224 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.
- Mixed-layer CAPE
- 443 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 4101 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
752
ACUS11 KWNS 130018
SWOMCD
SPC MCD 130017
COZ000-NMZ000-130215-
Mesoscale Discussion 0939
NWS Storm Prediction Center Norman OK
0717 PM CDT Sat Jun 12 2021
Areas affected...Southeast CO...Eastern NM
Concerning...Severe Thunderstorm Watch 262...
Valid 130017Z - 130215Z
The severe weather threat for Severe Thunderstorm Watch 262
continues.
SUMMARY...Isolated severe thunderstorms will continue across ww262.
DISCUSSION...Weak steering currents are contributing to the
reluctance of convection to propagate away from steeper low-level
lapse rate environment. Isolated thunderstorms have congregated off
the higher terrain over Las Animas County CO and around the Las
Vegas NM region. Over the last half hour or so, visible satellite
imagery suggests storm-top venting is perhaps a bit stronger as
anvil debris is beginning to expand more substantially.
Additionally, IR imagery shows cooling cloud tops and this could
lead to storm clusters that may form enough cold pool to eventually
spread southeast toward the northwest TX Panhandle. Whether this
activity is able to track along the instability axis is likely
predicated on an established cold pool, and this may take a few
hours.
..Darrow.. 06/13/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...PUB...ABQ...
LAT...LON 34940564 36640520 37740429 37680329 36690339 34790451
34940564SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 12:08 PM MDT | Mesoscale Discussion | SPC | Boulder, Broomfield, Clear Creek, Denver, Douglas, El Paso and 5 more | 97 min |
| Jun 13, 4:59 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Bent, Broomfield, Crowley, Denver and 9 more | 2 hr |
Nearby
Mesoscale Discussions in New Mexico, 2021Mesoscale Discussions in Colorado, 2021Every mesoscale discussion in 2021
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.