Alert archive / Florida / Mesoscale Discussions in 2016
Mesoscale Discussion 20
The Storm Prediction Center issued this mesoscale discussion at Jan 15, 2016, 6:17 AM EST for Dixie County, Taylor County, Wakulla County, Florida. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jan 15, 2016, 6:17 AM EST (11:17 UTC)
- Expired
- Jan 15, 2016, 7:45 AM EST
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
Counties Dixie County, FL, Taylor County, FL, Wakulla County, FL
The radar
The Tallahassee radar (KTLH), 71 km from the middle of the area, began a volume at 11:18 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.3 hours before the alert went out and 69 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
- 2471 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
980
ACUS11 KWNS 151118
SWOMCD
SPC MCD 151117
FLZ000-151245-
MESOSCALE DISCUSSION 0020
NWS STORM PREDICTION CENTER NORMAN OK
0517 AM CST FRI JAN 15 2016
AREAS AFFECTED...EASTERN FL PANHANDLE
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 151117Z - 151245Z
PROBABILITY OF WATCH ISSUANCE...20 PERCENT
SUMMARY...GUSTY WINDS...WITH ISOLATED LOCALLY DAMAGING WINDS...WILL
BE POSSIBLE NEAR THE COAST OF THE EASTERN FL PANHANDLE THROUGH EARLY
MORNING. A WATCH IS NOT EXPECTED AT THIS TIME.
DISCUSSION...A DEFINED BOWING SEGMENT WAS TRACKING
EAST/NORTHEASTWARD ACROSS THE FL BIG BEND AREA NEAR AAF TO TLH...AND
THE AAF ASOS RECORDED A 48 KT GUST AS THE LINE PASSED. THE AIRMASS
IMMEDIATELY DOWNSTREAM FROM THIS BOWING SEGMENT ACROSS SOUTHERN
JEFFERSON...TAYLOR AND DIXIE COUNTIES IS SOMEWHAT POORER...AND
DEWPOINTS IN THE UPPER 50S WITH SURFACE WINDS FROM THE
EAST/SOUTHEAST. WHILE SURFACE BASED CAPE IS MINIMAL...A STRONG
SOUTHERLY LLJ NEAR 50 KT WAS NOTED ON THE TLH VWP WILL AID IN GUSTY
WIND POTENTIAL NEAR THE COAST. AS STORMS TRACK INLAND...WEAKENING
SHOULD OCCUR. A WATCH IS NOT EXPECTED AT THIS TIME GIVEN THE LIMITED
AERIAL AND TEMPORAL NATURE OF THE THREAT.
..LEITMAN/DIAL.. 01/15/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TBW...TAE...
LAT...LON 30378405 30388365 30198329 29768306 29358306 29338333
29848379 29918430 30108445 30318436 30378405SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 15, 8:53 AM EST | Mesoscale Discussion | SPC | Charlotte, Citrus, DeSoto, Hardee, Hernando, Hillsborough and 8 more | 2 hr |
| Jan 15, 10:12 AM EST | Mesoscale Discussion | SPC | Broward, Charlotte, Collier, Glades, Hendry, Lee and 3 more | 2 hr |
| Jan 15, 10:35 AM EST | Tornado Watch | SPC | Broward, Charlotte, Collier, DeSoto, Glades, Hendry and 8 more | 6 hr |
Nearby
Mesoscale Discussions in Florida, 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.