Alert archive / Texas / Mesoscale Discussions in 2016
Mesoscale Discussion 1713
The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2016, 6:35 PM MDT for Lea County, New Mexico; 12 counties in Texas. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Sep 17, 2016, 6:35 PM MDT (00:35 UTC)
- Expired
- Sep 17, 2016, 8:00 PM MDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
Counties Lea County, NM, Andrews County, TX, Borden County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Glasscock County, TX, Howard County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Scurry County, TX, Sterling County, TX
The radar
The Midland/Odessa radar (KMAF), 60 km from the middle of the area, began a volume at 00:36 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
Midland Regional, TX (KMAF), launched 00:00Z, 0.6 hours before the alert went out and 59 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
- 2085 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 310 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 7.2
The text
As transmitted.
507
ACUS11 KWNS 180035
SWOMCD
SPC MCD 180035
TXZ000-NMZ000-180200-
MESOSCALE DISCUSSION 1713
NWS STORM PREDICTION CENTER NORMAN OK
0735 PM CDT SAT SEP 17 2016
AREAS AFFECTED...SERN MN AND INTO PORTIONS OF THE PERMIAN BASIN
CONCERNING...SEVERE THUNDERSTORM WATCH 480...
VALID 180035Z - 180200Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 480
CONTINUES.
SUMMARY...SEVERE RISK HAS LOCALLY INCREASES ACROSS PARTS OF SERN NM
AND INTO ADJACENT PORTIONS OF THE PERMIAN BASIN.
DISCUSSION...LATEST RADAR LOOP SHOWS ISOLATED RIGHT-MOVING
SUPERCELLS AND PERIODIC LEFT SPLITS ONGOING WITHIN AN WNW-ESE ZONE
WHICH INCLUDES THE MIDLAND/ODESSA AREA -- IN AND NEAR WW 480. TWO
OF THE MOST INTENSE CELLS INCLUDE A STORM MOVING SEWD ACROSS FAR
NWRN ECTOR AND SRN ANDREWS COUNTIES IN TX...AND A SECOND MOVING SEWD
OUT OF EDDY AND INTO SRN LEA COUNTY NM. THE ECTOR/ANDREWS COUNTY
STORM IN PARTICULAR IS VERY WELL-ORGANIZED...WITH A RECENT TORNADO
REPORT HAVING BEEN RECEIVED WITH THIS CELL. ALONG WITH THIS
LOCAL/TEMPORARY INCREASE IN TORNADO RISK AS STORMS MOVE SEWD ALONG A
WELL-DEFINED OUTFLOW BOUNDARY...HAIL IN EXCESS OF 1.5" IN DIAMETER
AND LOCALLY DAMAGING WINDS REMAIN POSSIBLE OVER THE NEXT COUPLE OF
HOURS.
..GOSS.. 09/18/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...SJT...LUB...MAF...ABQ...
LAT...LON 32200362 32500423 32990394 33120279 32810062 31650083
31450171 31750266 32200362SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 6:57 PM MDT | Mesoscale Discussion | SPC | Armstrong, Carson, Castro, Collingsworth, Dallam, Deaf Smith and 16 more | 2 hr |
| Sep 17, 9:02 PM MDT | Severe Thunderstorm Watch | SPC | Crane, Ector, Glasscock, Loving, Midland, Pecos and 5 more | 4 hr |
| Sep 17, 9:32 PM MDT | Mesoscale Discussion | SPC | Armstrong, Carson, Collingsworth, Donley, Gray, Hemphill and 3 more | 58 min |
Nearby
Mesoscale Discussions in Texas, 2016Mesoscale Discussions in New Mexico, 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.