Alert archive / Florida / Tornado Warnings in 1986
Tornado Warning 8, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Jul 31, 1986, 7:30 PM EDT for Alachua County, Putnam County, Florida. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1986, 7:30 PM EDT (23:30 UTC)
- Expired
- Jul 31, 1986, 8:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
Counties Alachua County, FL, Putnam County, FL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 11.5 hours before the alert went out and 218 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
- 2543 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 609 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAX 312336 TORJAX FLC001-107-010015- BULLETIN-EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSONVILLE FL 730 PM EDT THU JUL 31 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 815 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES IN NORTHEAST FLORIDA...ALACHUA PUTNAM. AT 725 PM EDT THE ALACHUA COUNTY CIVIL DEFENSE REPORTED A FUNNEL CLOUD NEAR HAWTHORNE IN ALACHUA COUNTY. RADAR INDICATES SEVERE THUNDERSTORMS IN THE AREA MOVING SOUTH AT 15 MILES AN HOUR. IF YOU ARE IN THE PATH OF THIS TORNADO...YOU SHOULD GO TO A BASEMENT SHELTER IF AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. CARS AND MOBILE HOMES SHOULD BE ABANDONED $FOR A REINFORCED BUILDING.
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 31, 5:02 PM EDT, 2 hours 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 500 PM EDT THU JUL 31 1986 AT 455 PM EDT RADAR INDICATED THAT THUNDERSTORMS ARE INCREASING ACROSS NORTHEAST FLORIDA WITH A VERY STRONG THUNDERSTORM NEAR WELLBORN IN SUWANNEE COUNTY. OTHER THUNDERSTORMS ARE INDICATED IN ST JOHNS COUNTY NEAR SWITZERLAND..IN THE ORANGE PARK AREA AND ALONG THE COAST NEAR PONTE VEDRA THE THUNDERSTORMS SHOW LITTLE MOVEMENT. THE THUNDERSTORMS ARE BE ACCOMPANIED BY PERIODS OF LOCALLY HEAVY RAIN WHICH MAY CAUSE TEMPORARY FLOODING OF SMALL CREEKS..LOW AREAS.. DRAINAGE DITCHES AND UNDERPASSES. THEY MAY ALSO BE ACCOMPANIED BY..GUSTY WINDS..FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL.
Special weather statement, Jul 31, 6:02 PM EDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 600 PM EDT THU JUL 31 1986 AT 555 PM EDT RADAR INDICATED VERY STRONG THUNDERSTORMS IN NORTHEAST FLORIDA BETWEEN STARKE AND CAMP BLANDING..NEAR KEYSTONE HEIGHTS AND JUST TO THE WEST OF ST AUGUSTINE. OTHER STRONG THUNDERSTORMS ARE BETWEEN FORT WHITE AND MAYO AND JUST OFFSHORE FROM PONTE VEDRA TO ST AUGUSTINE. THE THUNDERSTORM ARE MOVING TO THE SOUTH AT ABOUT 15 MPH. THE THUNDERSTORMS ARE BE ACCOMPANIED BY PERIODS OF LOCALLY HEAVY RAIN WHICH MAY CAUSE TEMPORARY FLOODING OF SMALL CREEKS..LOW AREAS.. DRAINAGE DITCHES AND UNDERPASSES. THEY MAY ALSO BE ACCOMPANIED BY..GUSTY WINDS..FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL. MARINE INTEREST OPERATING IN THE COASTAL WATERS FROM MAYPORT TO ST AUGUSTINE SHOULD BE ALERT FOR GUSTY WINDS..BUILDING SEAS..AND POOR VISIBILITY WITH THESE THUNDERSTORMS.
Nearby
Tornado Warnings in Florida, 1986Every tornado warning in 1986Tornadoes in 1986
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.