Alert archive / Florida / Mesoscale Discussions in 2016
Mesoscale Discussion 335
The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2016, 12:01 PM EDT for 7 counties in Florida. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2016, 12:01 PM EDT (16:01 UTC)
- Expired
- Apr 2, 2016, 1:00 PM EDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
Counties Hernando County, FL, Lake County, FL, Orange County, FL, Pasco County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL
The radar
The Tampa radar (KTBW), 129 km from the middle of the area, began a volume at 16:00 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
Tampa Bay, FL (KTBW), launched 12:00Z, 4.0 hours before the alert went out and 129 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
- 626 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 728 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.4
The text
As transmitted.
967
ACUS11 KWNS 021601
SWOMCD
SPC MCD 021601
FLZ000-021700-
MESOSCALE DISCUSSION 0335
NWS STORM PREDICTION CENTER NORMAN OK
1101 AM CDT SAT APR 02 2016
AREAS AFFECTED...NCNTRL FL PENINSULA
CONCERNING...SEVERE THUNDERSTORM WATCH 77...
VALID 021601Z - 021700Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 77
CONTINUES.
SUMMARY...SEVERE THREAT HAS DIMINISHED ACROSS MOST OF NCNTRL FL THIS
MORNING. WW 77 WILL BE ALLOWED TO EXPIRE AT 17Z.
DISCUSSION...A LINE OF THUNDERSTORMS EXTENDING FROM NEAR TAMPA BAY
ENEWD ACROSS THE NCNTRL FL PENINSULA WILL CONTINUE TO MOVE SLOWLY
SEWD OVER THE NEXT FEW HOURS. BEHIND THE LINE...THE AIRMASS HAS BEEN
TURNED OVER AND INSTABILITY IS WEAK. IN RESPONSE...THE SEVERE THREAT
HAS DIMINISHED ACROSS MOST OF WW 77. THE EXCEPTION WOULD BE IN THE
FAR SWRN PART OF THE WATCH WHERE A MARGINALLY SEVERE WIND GUST OR
BRIEF SPINUP CAN NOT BE RULED OUT OVER THE NEXT HOUR OR SO.
..BROYLES/HART.. 04/02/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MLB...TBW...JAX...TAE...
LAT...LON 28178210 28148315 28318315 28488303 28668299 28758302
28868326 29058341 29178345 29298317 29198299 29148286
29148276 28938270 28758266 28718260 28688230 28798214
28908232 28978224 28968166 29188160 29338165 29378144
29288141 29258112 29468111 29518074 28858036 28798099
28548092 28438081 28348092 28348184 28308207 28178210SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 9:02 PM EDT | Tornado Watch | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Clay and 21 more | 9 hr |
| Apr 1, 11:39 PM EDT | Mesoscale Discussion | SPC | Baker, Bradford, Columbia, Franklin, Hamilton, Jefferson and 7 more | 66 min |
| Apr 2, 2:19 AM EDT | Mesoscale Discussion | SPC | Dixie, Gilchrist, Lafayette, Taylor | 56 min |
| Apr 2, 4:18 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 15 more | 117 min |
| Apr 2, 6:00 AM EDT | Severe Thunderstorm Watch | SPC | Alachua, Bradford, Citrus, Clay, Flagler, Gilchrist and 12 more | 7 hr |
| Apr 2, 8:42 AM EDT | Mesoscale Discussion | SPC | Hernando, Pasco, Pinellas | 93 min |
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.