Alert archive / Texas / Mesoscale Discussions in 2016
Mesoscale Discussion 653
The Storm Prediction Center issued this mesoscale discussion at May 19, 2016, 11:35 AM CDT for 10 counties in Texas. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- May 19, 2016, 11:35 AM CDT (16:35 UTC)
- Expired
- May 19, 2016, 1:00 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
Counties Aransas County, TX, Brazoria County, TX, Calhoun County, TX, Fort Bend County, TX, Galveston County, TX, Jackson County, TX, Matagorda County, TX, Refugio County, TX, Victoria County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 145 km from the middle of the area, began a volume at 16:39 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
Corpus Christi, TX (KCRP), launched 12:00Z, 4.6 hours before the alert went out and 158 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
- 2030 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 14.9
The text
As transmitted.
314
ACUS11 KWNS 191636
SWOMCD
SPC MCD 191635
TXZ000-191800-
MESOSCALE DISCUSSION 0653
NWS STORM PREDICTION CENTER NORMAN OK
1135 AM CDT THU MAY 19 2016
AREAS AFFECTED...MIDDLE/UPPER TX GULF COAST
CONCERNING...SEVERE THUNDERSTORM WATCH 182...
VALID 191635Z - 191800Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 182
CONTINUES.
SUMMARY...A RISK FOR ISOLATED STRONG TO SEVERE WIND GUSTS AND
MARGINALLY SEVERE HAIL SHOULD DEVELOP WITHIN A SPATIALLY CONFINED
CORRIDOR DOWNSTREAM OF WW 182. PROBABILITY OF DOWNSTREAM WW ISSUANCE
IS 40 PERCENT.
DISCUSSION...30-35 KT EASTWARD-MOVING CLUSTER WILL LIKELY SHIFT EAST
OF WW 182 THROUGH ABOUT 18Z. LOWER 70S SURFACE DEW POINTS ARE
CONFINED FROM GALVESTON BAY SOUTHWARD ALONG THE WEST/EAST-ORIENTED
PORTION OF THE WARM FRONT THAT EXTENDS ACROSS THE FAR NORTHERN GULF.
DOWNSTREAM CLOUD COVERAGE AND LEADING STRATIFORM RAIN IN SOUTHEAST
TX WILL LIKELY LIMIT APPRECIABLE MOVEMENT OF THE FRONT NORTHWARD
THIS AFTERNOON. THIS SUGGESTS THE THREAT FOR STRONG TO ISOLATED
SEVERE WIND GUSTS WILL PROBABLY BE CONFINED TO A COUPLE COUNTIES
INLAND FROM THE IMMEDIATE COAST.
..GRAMS/GOSS.. 05/19/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...HGX...CRP...EWX...
LAT...LON 29219702 29429662 29719569 29729496 29529471 29279477
28579592 28159674 27979718 28069752 28249772 28549752
29219702SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 7:04 AM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, DeWitt, Dimmit, Frio and 10 more | 116 min |
| May 19, 7:56 AM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Bee, Calhoun, DeWitt, Duval and 14 more | 7 hr |
| May 19, 10:13 AM CDT | Mesoscale Discussion | SPC | Aransas, Bee, Calhoun, Goliad, Jackson, Jim Wells and 6 more | 92 min |
| May 19, 3:47 PM CDT | Mesoscale Discussion | SPC | Cameron, Hidalgo, Kenedy, Willacy | 88 min |
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.