Alert archive / New Mexico / Mesoscale Discussions in 2021
Mesoscale Discussion 1153
The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2021, 8:20 PM MDT for Curry County, Roosevelt County, New Mexico. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2021, 8:20 PM MDT (02:20 UTC)
- Expired
- Jul 4, 2021, 9:45 PM MDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 333
Counties Curry County, NM, Roosevelt County, NM
The radar
The Cannon AFB radar (KFDX), 50 km from the middle of the area, began a volume at 02:23 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 2.3 hours before the alert went out and 188 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
- 2304 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1243 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.9
The text
As transmitted.
431 ACUS11 KWNS 050221 SWOMCD SPC MCD 050220 TXZ000-NMZ000-050345- Mesoscale Discussion 1153 NWS Storm Prediction Center Norman OK 0920 PM CDT Sun Jul 04 2021 Areas affected...Parts of east central New Mexico and adjacent west Texas Concerning...Severe Thunderstorm Watch 333... Valid 050220Z - 050345Z The severe weather threat for Severe Thunderstorm Watch 333 continues. SUMMARY...An isolated severe storm may continue to develop across or just to the west and southwest of Clovis, NM, through 9-10 PM MDT, before diminishing later this evening. A new severe weather watch is not anticipated, but portions of Severe Thunderstorm Watch 333 may be locally extended in time for an hour or two. DISCUSSION...While upscale growth has not occurred, an isolated long-lived supercell is maintaining considerable strength as it approaches the Clovis, NM area. There may be a strong downburst ongoing, and associated outflow has undercut the lower/mid-level mesocyclone, but latest objective analysis suggests that moderate to strong south-southwesterly low-level storm relative winds may maintain inflow of moist air with sizable CAPE into the updraft for at least another or two. As this occurs, stronger convection should tend to propagate near or just to the west through southwest of Clovis through 03-04Z. ..Kerr.. 07/05/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LUB...ABQ... LAT...LON 34620341 34480290 33890312 33760357 34040381 34620341
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 11:26 PM MDT | Mesoscale Discussion | SPC | Curry, De Baca, Guadalupe, Roosevelt | 2 hr |
Nearby
Mesoscale Discussions in New Mexico, 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.