Alert archive / Texas / Mesoscale Discussions in 2018
Mesoscale Discussion 1582
The Storm Prediction Center issued this mesoscale discussion at Oct 14, 2018, 6:05 PM CDT for 22 counties in Texas. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Oct 14, 2018, 6:05 PM CDT (23:05 UTC)
- Expired
- Oct 14, 2018, 8:00 PM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 22 counties
Anderson County, TX, Bosque County, TX, Camp County, TX, Comanche County, TX, Ellis County, TX, Erath County, TX, Freestone County, TX, Gregg County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Kaufman County, TX, Limestone County, TX, McLennan County, TX, Navarro County, TX, Smith County, TX, Somervell County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 72 km from the middle of the area, began a volume at 23:07 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
Norman, OK (KOUN), launched 12:00Z, 11.1 hours before the alert went out and 341 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 7:41 PM CDT | Mesoscale Discussion | SPC | Angelina, Brazos, Burleson, Grimes, Houston, Madison and 6 more | 64 min |
| Oct 14, 3:55 PM CDT | Mesoscale Discussion | SPC | Brown, Coleman, Comanche, Concho, Eastland, Erath and 5 more | 3 hr |
Nearby
Mesoscale Discussions in Texas, 2018Every mesoscale discussion in 2018
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.