Alert archive / Florida / Mesoscale Discussions in 2016
Mesoscale Discussion 248
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2016, 3:51 PM EDT for 10 counties in Florida. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2016, 3:51 PM EDT (19:51 UTC)
- Expired
- Mar 19, 2016, 5:45 PM EDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
Counties Broward County, FL, Collier County, FL, Glades County, FL, Hendry County, FL, Indian River County, FL, Martin County, FL, Miami-Dade County, FL, Okeechobee County, FL, Palm Beach County, FL, Saint Lucie County, FL
The radar
The Miami radar (KAMX), 110 km from the middle of the area, began a volume at 19:51 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
Miami, FL (KMFL), launched 12:00Z, 7.9 hours before the alert went out and 92 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
- 185 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1139 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.6
The text
As transmitted.
769
ACUS11 KWNS 191951
SWOMCD
SPC MCD 191951
FLZ000-192145-
MESOSCALE DISCUSSION 0248
NWS STORM PREDICTION CENTER NORMAN OK
0251 PM CDT SAT MAR 19 2016
AREAS AFFECTED...PORTIONS OF CENTRAL/SRN FL
CONCERNING...SEVERE THUNDERSTORM WATCH 50...
VALID 191951Z - 192145Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 50
CONTINUES.
SUMMARY...THE RISK FOR DAMAGING WINDS AND A BRIEF TORNADO OR
WATERSPOUT CONTINUES FOR THE REMAINING VALID PORTIONS OF THE WATCH
AREA...INCLUDING THE RECENT LOCAL EXTENSION SOUTH TO INCLUDE BROWARD
COUNTY.
DISCUSSION...SCATTERED THUNDERSTORMS WERE IN PROGRESS AT 1945Z
ACROSS FAR SOUTHEAST FLORIDA IN THE VICINITY OF A CONFLUENT AXIS
BASED ON SURFACE OBSERVATIONS AND ANIMATED VISIBLE IMAGERY. AN
EARLIER STORM OVER NORTHEAST PALM BEACH COUNTY PRODUCED DAMAGING
GUSTS...AND A STORM JUST OFFSHORE OF THE CENTRAL BROWARD COUNTY
COAST PRODUCED A BRIEF WATERSPOUT. ADDITIONAL STRONG/SEVERE STORMS
WILL BE POSSIBLE FOR THE NEXT FEW HOURS IN AN UNCAPPED AND
MODERATELY UNSTABLE ENVIRONMENT IN THE PRESENCE OF 50-55 KTS OF
EFFECTIVE BULK SHEAR. DAMAGING WINDS AND A BRIEF TORNADO OR
WATERSPOUT REMAIN POSSIBLE...ESPECIALLY WHERE STORMS INTERACT WITH A
PRE-EXISTING OUTFLOW BOUNDARY.
FARTHER WEST...THUNDERSTORMS HAVE THUS FAR NOT INTENSIFIED ACROSS
SOUTHWEST FLORIDA AS THE EARLIER CONVECTIVE LINE CONTINUES TO MOVE
EAST. THE ENVIRONMENT IN ADVANCE OF THESE STORMS REMAINS FAVORABLE
FOR AT LEAST AN ISOLATED SEVERE THREAT FROM HENDRY/COLLIER COUNTIES
EASTWARD DURING THE REMAINDER OF THE AFTERNOON.
..BUNTING.. 03/19/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MFL...MLB...TBW...
LAT...LON 27618089 27818035 27758005 27167978 26527982 26258004
25688021 25548032 25528074 25738101 25918146 25998176
26208195 27178129 27618089SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 10:37 AM EDT | Mesoscale Discussion | SPC | Charlotte, DeSoto, Hardee, Hillsborough, Lee, Manatee and 2 more | 113 min |
| Mar 19, 12:50 PM EDT | Mesoscale Discussion | SPC | Charlotte, DeSoto, Glades, Hardee, Hendry, Highlands and 7 more | 115 min |
| Mar 19, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Broward, Charlotte, Collier, Glades, Hendry, Indian River and 5 more | 5 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.