Alert archive / Texas / Mesoscale Discussions in 2016
Mesoscale Discussion 261
The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2016, 11:13 PM CDT for 23 counties in Texas. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- Mar 23, 2016, 11:13 PM CDT (04:13 UTC)
- Expired
- Mar 24, 2016, 12:15 AM CDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
All 23 counties
Bosque County, TX, Collin County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Fannin County, TX, Hamilton County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, McLennan County, TX, Mills County, TX, Navarro County, TX, Rains County, TX, Rockwall County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 42 km from the middle of the area, began a volume at 04:15 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
Fort Worth, TX (KFWD), launched 00:00Z, 4.2 hours before the alert went out and 71 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
- 1404 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1555 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 8.9
The text
As transmitted.
224
ACUS11 KWNS 240413
SWOMCD
SPC MCD 240413
TXZ000-OKZ000-240515-
MESOSCALE DISCUSSION 0261
NWS STORM PREDICTION CENTER NORMAN OK
1113 PM CDT WED MAR 23 2016
AREAS AFFECTED...PORTIONS OF NRN/CNTRL TX
CONCERNING...SEVERE THUNDERSTORM WATCH 53...
VALID 240413Z - 240515Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 53
CONTINUES.
SUMMARY...STRONG TO SEVERE THUNDERSTORMS MAY CONTINUE A FEW MORE
HOURS. A LOCAL EXTENSION IN TIME AND SPACE MAY BE NEEDED. THE THREAT
IS EXPECTED TO GREATLY DIMINISH AFTER 06Z.
DISCUSSION...STRONG TO SEVERE STORMS ACROSS NORTHERN INTO CENTRAL
TEXAS CONTINUE TO MOVE EAST/NORTHEAST THROUGH A MODESTLY UNSTABLE
AIRMASS. STEEP LAPSE RATES AND STRONG VERTICAL SHEAR WILL CONTINUE
TO SUPPORT THESE STORMS ANOTHER FEW HOURS. AS SUCH...A LOCAL
EXTENSION IN TIME/SPACE MAY BE NEEDED FOR SEVERE THUNDERSTORM WATCH
53. LARGE HAIL AND LOCALLY DAMAGING WINDS WILL CONTINUE TO BE THE
MAIN THREAT. HOWEVER LOW LEVEL SHEAR REMAINS ADEQUATE FOR SOME
ROTATION IN THE LOWEST LEVELS PER THE GRK VAD WIND PROFILER. BEYOND
06Z...THE SEVERE THREAT IS EXPECTED TO BE GREATLY DIMINISHED...AND A
DOWNSTREAM WATCH INTO EAST TX IS NOT EXPECTED AT THIS TIME.
..LEITMAN.. 03/24/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...SHV...FWD...OUN...EWX...SJT...
LAT...LON 33849522 32929556 32259608 31579680 31279734 31049801
30999846 30999878 31059891 31219899 31529882 31749863
32209814 33329661 33729618 33849584 33849522SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 2:52 AM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Austin, Bee, Brazoria, Brazos and 28 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.