Alert archive / Florida / Mesoscale Discussions in 2016
Mesoscale Discussion 332
The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2016, 2:19 AM EDT for 4 counties in Florida. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2016, 2:19 AM EDT (06:19 UTC)
- Expired
- Apr 2, 2016, 3:15 AM EDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
Counties Dixie County, FL, Gilchrist County, FL, Lafayette County, FL, Taylor County, FL
The radar
The Tallahassee radar (KTLH), 99 km from the middle of the area, began a volume at 06:21 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
Jacksonville, FL (KJAX), launched 00:00Z, 6.3 hours before the alert went out and 197 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
- 1190 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1066 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 3.5
The text
As transmitted.
708 ACUS11 KWNS 020620 SWOMCD SPC MCD 020619 FLZ000-020715- MESOSCALE DISCUSSION 0332 NWS STORM PREDICTION CENTER NORMAN OK 0119 AM CDT SAT APR 02 2016 AREAS AFFECTED...FL BIG BEND AND PARTS OF N FL CONCERNING...TORNADO WATCH 76... VALID 020619Z - 020715Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 76 CONTINUES. SUMMARY...THE REMAINING STRONG TO PERHAPS LOW-SEVERE RISK IS GREATEST IN THE IMMEDIATE FL BIG BEND VICINITY THROUGH TORNADO WATCH 76 EXPIRATION TIME OF 08Z. WHILE IT APPEARS UNLIKELY AN ADDITIONAL WATCH WILL BE NEEDED...CONVECTIVE TRENDS WILL BE MONITORED OVER THE NEXT SEVERAL HOURS AND WILL LIKELY DICTATE WHETHER A NEW WATCH WILL BE NEEDED LATER TONIGHT. DISCUSSION...RADAR IMAGERY OVER THE PAST HOUR HAS SHOWN A SWD-SAGGING OUTFLOW BOUNDARY OVER THE FL BIG BEND WITH A STRONGER UPDRAFT INTERSECTING THE BOUNDARY OVER APALACHEE BAY. WEAK ROTATION WAS OBSERVED FROM KTLH WITH THIS STORM WHEREAS THE REMAINING PORTION OF THE LARGER-SCALE MCS EXTENDING FROM THE FL BIG BEND NEWD INTO SERN GA EXHIBITS A COLD-POOL DOMINATED PARALLEL-STRATIFORM CHARACTER. EXPECTING LITTLE FLUCTUATION IN SURFACE TEMP/DEWPOINTS TONIGHT AS CONDITIONS WILL GENERALLY HOLD FROM THE 68-72 RANGE N OF THE OUTFLOW BOUNDARY AND MID 70S DEG F TEMPS S OF THE BOUNDARY. AS A RESULT...CONDITIONS IN THE BOUNDARY LAYER WILL REMAIN MARGINAL BUT NOT PROHIBITIVE OF STRONGER WINDS PERHAPS REACHING THE SURFACE FROM ANY MODESTLY-ORGANIZED CONVECTIVE STRUCTURE /I.E. TRANSIENT ROTATION OR BOWING SEGMENT/. NONETHELESS...STRONG WIND FIELDS COUPLED WITH A MOIST BOUNDARY LAYER WILL SUPPORT THE CONTINUATION OF A LOW-CONDITIONAL RISK FOR STRONG TO PERHAPS DAMAGING GUSTS. ..SMITH.. 04/02/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TBW...JAX...TAE... LAT...LON 29898436 30168280 29568271 29438367 29898436
SPC 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, 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 |
| Apr 2, 12:01 PM EDT | Mesoscale Discussion | SPC | Hernando, Lake, Orange, Pasco, Seminole, Sumter and 1 more | 59 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.