Alert archive / Texas / Mesoscale Discussions in 2020
Mesoscale Discussion 710
The Storm Prediction Center issued this mesoscale discussion at May 24, 2020, 3:48 PM CDT for 26 counties in Texas. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- May 24, 2020, 3:48 PM CDT (20:48 UTC)
- Expired
- May 24, 2020, 5:15 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 218
All 26 counties
Borden County, TX, Coke County, TX, Crane County, TX, Crockett County, TX, Dawson County, TX, Fisher County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX
The radar
The San Angelo radar (KSJT), 144 km from the middle of the area, began a volume at 20:50 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 8.8 hours before the alert went out and 151 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
- 1975 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 716 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 10.4
The text
As transmitted.
134
ACUS11 KWNS 242049
SWOMCD
SPC MCD 242048
TXZ000-242215-
Mesoscale Discussion 0710
NWS Storm Prediction Center Norman OK
0348 PM CDT Sun May 24 2020
Areas affected...West Texas
Concerning...Severe Thunderstorm Watch 218...
Valid 242048Z - 242215Z
The severe weather threat for Severe Thunderstorm Watch 218
continues.
SUMMARY...The damaging wind and large hail threat continues across
watch 218.
DISCUSSION...The large cluster of storms in Pecos/Terrell county has
already produced 1.5 inch hail with 2030Z MRMS MESH suggesting hail
over 2 inches is likely. Expect this cluster to continue to pose a
very large hail/damaging wind threat given the very unstable and
steep lapse rate environment. Additional storm development seems
likely within the hour farther north along the dryline as towering
cumulus can now be observed along most of the boundary. However
2030Z regional VWPs show a lull in mid-level flow at MAF with
stronger flow at LBB and DRT. This may limit storm
organization/longevity farther north in the watch except for the
northern most row or two of counties bordering watch 219. The latest
runs from the HRRR suggest this activity could impact Dawson and
Martin counties. Therefore, trends will continue to be monitored to
see if watch 218 needs an areal extension.
..Bentley.. 05/24/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...EWX...SJT...LUB...MAF...
LAT...LON 29060290 29600317 31330269 32780203 33000115 32969990
32539978 30280036 29450090 29330114 29540134 29730152
29740223 29650260 29060290SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 8:48 PM CDT | Mesoscale Discussion | SPC | Archer, Clay, Montague, Wheeler, Wichita, Wilbarger | 117 min |
| May 23, 9:33 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Haskell, Jack, Jones and 8 more | 4 hr |
| May 23, 11:36 PM CDT | Mesoscale Discussion | SPC | Archer, Clay, Jack, Montague, Palo Pinto, Parker and 4 more | 114 min |
| May 24, 12:21 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Crane, Crockett, Dawson, Glasscock and 13 more | 114 min |
| May 24, 12:39 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bowie, Brazos, Burleson and 60 more | 96 min |
| May 24, 1:58 PM CDT | Severe Thunderstorm Watch | SPC | Borden, Brewster, Coke, Crane, Crockett, Dawson and 19 more | 6 hr |
| May 24, 3:07 PM CDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 27 more | 83 min |
| May 24, 3:26 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 23 more | 7 hr |
| May 24, 5:28 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Dimmit, Duval, Edwards and 20 more | 2 hr |
| May 24, 5:56 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bexar, Brooks, Dimmit, Duval and 17 more | 6 hr |
| May 24, 6:39 PM CDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 23 more | 2 hr |
| May 24, 6:58 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Concho, Eastland and 15 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020
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.