Alert archive / Texas / Mesoscale Discussions in 2016
Mesoscale Discussion 697
The Storm Prediction Center issued this mesoscale discussion at May 23, 2016, 5:29 PM CDT for 36 counties in Texas. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- May 23, 2016, 5:29 PM CDT (22:29 UTC)
- Expired
- May 23, 2016, 7:00 PM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 36 counties
Borden County, TX, Briscoe County, TX, Coke County, TX, Cottle County, TX, Crockett County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Fisher County, TX, Floyd County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Howard County, TX, Irion County, TX, Kent County, TX, King County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Sterling County, TX, Stonewall County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX
The radar
The Midland/Odessa radar (KMAF), 88 km from the middle of the area, began a volume at 22:29 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
Midland Regional, TX (KMAF), launched 12:00Z, 10.5 hours before the alert went out and 89 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
- 2825 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 985 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.8
The text
As transmitted.
804
ACUS11 KWNS 232230
SWOMCD
SPC MCD 232229
TXZ000-240000-
MESOSCALE DISCUSSION 0697
NWS STORM PREDICTION CENTER NORMAN OK
0529 PM CDT MON MAY 23 2016
AREAS AFFECTED...WEST/SOUTHWEST TX
CONCERNING...TORNADO WATCH 199...
VALID 232229Z - 240000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 199 CONTINUES.
SUMMARY...THE THREAT FOR VERY LARGE HAIL WILL CONTINUE IN THE
NEAR-TERM ACROSS WEST AND SOUTHWEST TX. TORNADO POTENTIAL MAY
INCREASE INTO THE EARLY EVENING.
DISCUSSION...TSTM COVERAGE CONTINUES TO INCREASE AS CONVECTIVE
TEMPERATURES HAVE BEEN REACHED ALONG A WAVY DRYLINE...WHICH EXTENDS
GENERALLY SSWD FROM NEAR KPVW TO KFST. SFC OBSERVATIONS SUGGEST THE
DRYLINE HAS STALLED NEAR I-27/HWY 87...AND WFO LUB HAS ADDED AN
ADDITIONAL ROW OF COUNTIES TO TORNADO WATCH 199. RECENT RADAR TRENDS
SUGGEST THE MOST INTENSE CONVECTION IS FOCUSED ACROSS SOUTHWEST
TX...WHERE DEVELOPING ISOLATED SUPERCELLS ARE POSING A THREAT FOR
LARGE HAIL. STORMS HAVE STRUGGLED TO MAINTAIN INTENSITY THUS FAR
INTO THE TX SOUTH PLAINS...BUT AN EXTREMELY UNSTABLE AIR MASS
REMAINS IN PLACE...WITH LATEST OBJECTIVE ANALYSIS DATA ESTIMATING
MLCAPE VALUES EXCEEDING 3000 J/KG ALONG/E OF THE CAPROCK. THE
CURRENT EXPECTATION IS FOR LARGE-HAIL POTENTIAL TO CONTINUE
INCREASING INTO THE EARLY EVENING AS ISOLATED SUPERCELL DEVELOPMENT
BECOMES MORE LIKELY. TORNADO POTENTIAL MAY ALSO ACCOMPANY ANY MATURE
STORM AS LOW-LEVEL SHEAR INCREASES THIS EVENING.
..ROGERS.. 05/23/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...EWX...SJT...LUB...MAF...
LAT...LON 33930011 31569989 29610074 29490118 29680132 29710208
29700265 30760277 32370203 33610205 34460155 34710098
34610024 33930011SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 7:02 PM CDT | Mesoscale Discussion | SPC | Armstrong, Borden, Briscoe, Carson, Childress, Collingsworth and 22 more | 118 min |
| May 22, 7:46 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Hardeman, Wichita, Wilbarger | 89 min |
| May 22, 8:48 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more | 5 hr |
| May 22, 9:10 PM CDT | Mesoscale Discussion | SPC | Childress, Collingsworth, Cottle, Dickens, Donley, Gray and 10 more | 65 min |
| May 22, 9:35 PM CDT | Mesoscale Discussion | SPC | Irion, Reagan | 85 min |
| May 23, 1:36 AM CDT | Mesoscale Discussion | SPC | Archer, Clay, Cooke, Denton, Grayson, Montague and 2 more | 84 min |
| May 23, 2:15 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Clay, Cooke, Grayson, Montague, Wichita and 1 more | 5 hr |
| May 23, 4:58 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Cooke, Fannin, Grayson and 3 more | 62 min |
| May 23, 1:32 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Crockett, Crosby, Dawson, Garza and 15 more | 118 min |
| May 23, 2:18 PM CDT | Mesoscale Discussion | SPC | Childress, Collingsworth, Cottle, Donley, Hall, Hemphill and 2 more | 117 min |
| May 23, 2:32 PM CDT | Tornado Watch | SPC | Borden, Brewster, Briscoe, Childress, Coke, Cottle and 37 more | 7 hr |
| May 23, 3:37 PM CDT | Tornado Watch | SPC | Collingsworth, Donley, Foard, Gray, Hardeman, Hemphill and 6 more | 8 hr |
| May 23, 6:08 PM CDT | Mesoscale Discussion | SPC | Collingsworth, Donley, Foard, Hardeman, Hemphill, Knox and 3 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2016Every mesoscale discussion in 2016
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.