Alert archive / Florida / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 21, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 6, 2020, 9:56 PM EST for 7 counties in Florida. It was in force for 49 min. 25 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Feb 6, 2020, 9:56 PM EST (02:56 UTC)
- Expired
- Feb 6, 2020, 10:45 PM EST
- In force
- 49 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Alachua County, FL, Bradford County, FL, Clay County, FL, Duval County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL
The radar
The Jacksonville radar (KJAX), 47 km from the middle of the area, began a volume at 02:55 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 6, 10:12 PM EST | TSTM WND GST 58 | 1 Ne Jacksonville Intl, FL | THE AUTOMATED SURFACE OBSERVING SYSTEM AT JACKSONVILLE INTERNATIONAL AIRPORT MEASURED A PEAK WIND GUST OF 58 MPH. |
| Feb 6, 10:12 PM EST | TSTM WND GST 58 | 1 Ne Jacksonville Intl, FL | THE AUTOMATED SURFACE OBSERVING SYSTEM AT JACKSONVILLE INTERNATIONAL AIRPORT MEASURED A PEAK WIND GUST OF 58 MPH. |
| Feb 6, 10:12 PM EST | TSTM WND GST 58 | Jacksonville Intl Arpt, FL | WIND GUST OF 58 MPH MEASURED AT JACKSONVILLE INTERNATIONAL AIRPORT. |
| Feb 6, 10:16 PM EST | TSTM WND DMG | 4 N Lake Geneva, FL | *** 2 INJ *** CLAY COUNTY 911/DISPATCH REPORTS APPROXIMATELY 5 HOMES DAMAGED AND ONE HOME SUSTAINING MAJOR DAMAGE. TWO PEOPLE HAVE MINOR INJURIES. |
| Feb 6, 10:16 PM EST | TSTM WND DMG | 4 N Lake Geneva, FL | CLAY COUNTY 911/DISPATCH REPORTS APPROXIMATELY 6-10 TREES TOPPLED ONTO HOUSES AROUND THE COUNTY WITH A FEW OF THOSE HOMES SUSTAINING MAJOR DAMAGE. |
| Feb 6, 10:16 PM EST | TSTM WND DMG | 4 N Lake Geneva, FL | *** 2 INJ *** CLAY COUNTY 911/DISPATCH REPORTS APPROXIMATELY 5 HOMES DAMAGED AND ONE HOME SUSTAINING MAJOR DAMAGE. TWO PEOPLE HAVE MINOR INJURIES. |
| Feb 6, 10:18 PM EST | TSTM WND DMG | 4 N Orange Park, FL | ACTION NEWS JAX REPORTED A TREE DOWNED ONTO A MOBILE HOME ALONG COLLINS ROAD IN ORTEGA. NO INJURIES REPORTED. |
| Feb 6, 10:18 PM EST | TSTM WND DMG | 4 N Orange Park, FL | ACTION NEWS JAX REPORTED A TREE DOWNED ONTO A MOBILE HOME ALONG COLLINS ROAD IN ORTEGA. NO INJURIES REPORTED. |
| Feb 6, 10:23 PM EST | TSTM WND GST 76 | 5 Nne Orange Park, FL | THE AIRPORT WEATHER OBSERVING STATION AT NAVAL AIR STATION JACKSONVILLE MEASURED A SUSTAINED WIND OF 59 MPH WITH A PEAK GUST OF 76 MPH. |
| Feb 6, 10:23 PM EST | TSTM WND GST 76 | 5 Nne Orange Park, FL | THE AIRPORT WEATHER OBSERVING STATION AT NAVAL AIR STATION JACKSONVILLE REPORTED A SUSTAINED WIND GUST OF 59 MPH WITH A PEAK GUST TO 76 MPH. |
| Feb 6, 10:23 PM EST | TSTM WND GST 76 | 5 Nne Orange Park, FL | THE AIRPORT WEATHER OBSERVING STATION AT NAVAL AIR STATION JACKSONVILLE MEASURED A SUSTAINED WIND OF 59 MPH WITH A PEAK GUST OF 76 MPH. |
| Feb 6, 10:27 PM EST | TSTM WND DMG | 5 Nw Orange Springs, FL | PUTNAM COUNTY 911/DISPATCH REPORTS TREES AND POWERLINES DOWNED THROUGHOUT WESTERN PORTIONS OF THE COUNTY. |
| Feb 6, 10:27 PM EST | TSTM WND DMG | 5 Nw Orange Springs, FL | PUTNAM COUNTY 911/DISPATCH REPORTS TREES AND POWERLINES DOWNED THROUGHOUT WESTERN PORTIONS OF THE COUNTY. |
| Feb 6, 10:28 PM EST | TSTM WND DMG | 2 E Arlington, FL | SOCIAL MEDIA REPORT OF A TREE DOWN IN ALDERMAN PARK. TIME OF DAMAGE BASED ON RADAR DATA. |
| Feb 6, 10:28 PM EST | TSTM WND DMG | 2 E Arlington, FL | SOCIAL MEDIA REPORT OF A TREE DOWN IN ALDERMAN PARK. TIME OF DAMAGE BASED ON RADAR DATA. |
| Feb 6, 10:30 PM EST | TSTM WND DMG | 4 Wnw Fort Caroline, FL | ACTION NEWS JAX REPORTS A SEMI-TRACTOR TRAILER TIPPED OVER ON THE DAMES POINT BRIDGE. |
| Feb 6, 10:30 PM EST | TSTM WND DMG | 4 Wnw Fort Caroline, FL | ACTION NEWS JAX REPORTS A SEMI-TRACTOR TRAILER TIPPED OVER ON THE DAMES POINT BRIDGE. |
| Feb 6, 10:30 PM EST | TSTM WND GST 45 | 5 Nnw Arlington, FL | THE SENSOR AT THE NAVY FUEL DEPOT ALONG SOMMERS ROAD IN DUVAL COUNTY MEASURED A PEAK WIND GUST OF 45 MPH. |
| Feb 6, 10:30 PM EST | TSTM WND GST 45 | 5 Nnw Arlington, FL | THE SENSOR AT THE NAVY FUEL DEPOT ALONG SOMMERS ROAD IN DUVAL COUNTY MEASURED A PEAK WIND GUST OF 45 MPH. |
| Feb 6, 10:36 PM EST | TSTM WND GST 52 | 5 E Arlington, FL | CRAIG AIRPORT REPORTED A 52 MPH WIND GUST. |
| Feb 6, 10:36 PM EST | TSTM WND GST 52 | 5 E Arlington, FL | CRAIG AIRPORT REPORTED A 52 MPH WIND GUST. |
| Feb 6, 10:41 PM EST | TSTM WND GST 50 | 4 W Jacksonville Beach, FL | A 50 MPH WIND GUST WAS REPORTED IN JACKSONVILLE BEACH. |
| Feb 6, 10:41 PM EST | TSTM WND GST 50 | 4 W Jacksonville Beach, FL | A 50 MPH WIND GUST WAS REPORTED IN JACKSONVILLE BEACH. |
| Feb 6, 10:43 PM EST | TSTM WND GST 56 | Mayport, FL | THE AIRPORT WEATHER OBSERVING STATION AT NAVAL STATION MAYPORT MEASURED A PEAK SOUTHWESTERLY WIND GUST OF 56 MPH. |
| Feb 6, 10:54 PM EST | TSTM WND GST 43 | 1 Nw Mayport, FL | MAYPORT NOS GUAGE REPORTED A 43 MPH WIND GUST. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 6, 5:30 PM EST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 00:00Z, 2.9 hours before the alert went out and 49 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
- 301 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1234 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 344 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 1.9
The text
As transmitted.
632
WUUS52 KJAX 070256
SVRJAX
FLC001-007-019-031-089-107-109-070345-
/O.NEW.KJAX.SV.W.0021.200207T0256Z-200207T0345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
956 PM EST Thu Feb 6 2020
The National Weather Service in Jacksonville has issued a
* Severe Thunderstorm Warning for...
Central Nassau County in northeastern Florida...
Eastern Alachua County in northern Florida...
Eastern Bradford County in northern Florida...
St. Johns County in northeastern Florida...
Northern Putnam County in northeastern Florida...
Clay County in northeastern Florida...
Duval County in northeastern Florida...
* Until 1045 PM EST.
* At 955 PM EST, severe thunderstorms were located along a line
extending from near Callahan to Rochelle, moving east at 50 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Jacksonville, Saint Augustine, Fernandina Beach, Palatka, Orange
Park, Green Cove Springs, Starke, Interlachen, Keystone Heights and
Callahan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight EST for northern and
northeastern Florida.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2968 8122 2949 8235 3014 8207 3015 8205
3018 8205 3057 8188 3065 8142
TIME...MOT...LOC 0255Z 253DEG 66KT 3058 8186 2959 8225
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
WOLF2 follow-up statements
543
WWUS52 KJAX 070322
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
1022 PM EST Thu Feb 6 2020
FLC001-007-019-031-089-107-109-070345-
/O.CON.KJAX.SV.W.0021.000000T0000Z-200207T0345Z/
Nassau FL-Alachua FL-Bradford FL-St. Johns FL-Putnam FL-Clay FL-
Duval FL-
1022 PM EST Thu Feb 6 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EST
FOR CENTRAL NASSAU...SOUTHEASTERN ALACHUA...SOUTHEASTERN BRADFORD...
ST. JOHNS...NORTHERN PUTNAM...CLAY AND DUVAL COUNTIES...
At 1021 PM EST, severe thunderstorms were located along a line
extending from near Yulee to near Hawthorne, moving east at 45 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated. At 1012 PM, Jacksonville International
Airport reported a gust to 58 mph.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Jacksonville, Saint Augustine, Fernandina Beach, Palatka, Orange
Park, Green Cove Springs, Starke, Interlachen, Keystone Heights and
Callahan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight EST for northern and
northeastern Florida.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2952 8223 3008 8207 3057 8188 3065 8142
2968 8122
TIME...MOT...LOC 0321Z 267DEG 37KT 3059 8159 2958 8202
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
SHASHY437
WWUS52 KJAX 070334
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
1034 PM EST Thu Feb 6 2020
FLC001-007-070342-
/O.CAN.KJAX.SV.W.0021.000000T0000Z-200207T0345Z/
Alachua FL-Bradford FL-
1034 PM EST Thu Feb 6 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ALACHUA AND
SOUTHEASTERN BRADFORD COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until midnight EST for northeastern
Florida.
LAT...LON 2968 8122 2955 8205 3011 8184 3060 8172
3065 8142
TIME...MOT...LOC 0332Z 254DEG 57KT 3061 8142 2959 8192
$$
FLC019-031-089-107-109-070345-
/O.CON.KJAX.SV.W.0021.000000T0000Z-200207T0345Z/
Nassau FL-St. Johns FL-Putnam FL-Clay FL-Duval FL-
1034 PM EST Thu Feb 6 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EST
FOR EAST CENTRAL NASSAU...ST. JOHNS...NORTHERN PUTNAM...CENTRAL CLAY
AND DUVAL COUNTIES...
At 1032 PM EST, severe thunderstorms were located along a line
extending from near Fernandina Beach to Interlachen, moving east at
65 mph.
HAZARD...Up to 70 to 75 mph wind gusts.
SOURCE...Radar indicated. At 1023 PM, NAS JAX Airport measured a
gust to 76 mph.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Jacksonville, Saint Augustine, Fernandina Beach, Palatka, Orange
Park, Green Cove Springs, Interlachen, Hastings, East Palatka and
Jacksonville International Arpt.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight EST for northeastern
Florida.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2968 8122 2955 8205 3011 8184 3060 8172
3065 8142
TIME...MOT...LOC 0332Z 254DEG 57KT 3061 8142 2959 8192
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
SHASHYThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 6, 7:04 PM EST | Severe Thunderstorm Warning | JAX | Hamilton, Suwannee | 56 min |
| Feb 6, 7:42 PM EST | Severe Thunderstorm Warning | JAX | Baker, Columbia, Hamilton, Suwannee | 63 min |
| Feb 6, 8:00 PM EST | Severe Thunderstorm Warning | JAX | Columbia, Hamilton, Suwannee | 45 min |
| Feb 6, 8:41 PM EST | Severe Thunderstorm Warning | JAX | Alachua, Baker, Columbia, Gilchrist, Hamilton, Suwannee and 1 more | 49 min |
| Feb 6, 8:51 PM EST | Tornado Warning | JAX | Baker, Columbia, Hamilton | 39 min |
| Feb 6, 8:55 PM EST | Severe Thunderstorm Warning | JAX | Alachua, Gilchrist | 50 min |
| Feb 6, 9:22 PM EST | Severe Thunderstorm Warning | JAX | Alachua, Baker, Bradford, Clay, Duval, Gilchrist and 3 more | 38 min |
| Feb 6, 9:28 PM EST | Severe Thunderstorm Warning | JAX | Nassau | 47 min |
| Feb 6, 9:34 PM EST | Severe Thunderstorm Warning | JAX | Alachua, Marion | 41 min |
| Feb 6, 9:43 PM EST | Special Marine Warning | JAX | 2 hr | |
| Feb 6, 9:54 PM EST | Severe Thunderstorm Warning | JAX | Nassau | 51 min |
| Feb 6, 10:00 PM EST | Special Marine Warning | JAX | 2 hr | |
| Feb 6, 10:11 PM EST | Severe Thunderstorm Warning | JAX | Alachua, Marion, Putnam | 49 min |
| Feb 6, 10:42 PM EST | Severe Thunderstorm Warning | JAX | Clay, Duval, Nassau, Putnam, Saint Johns | 48 min |
| Feb 6, 10:57 PM EST | Severe Thunderstorm Warning | JAX | Flagler, Marion, Putnam, Saint Johns | 63 min |
| Feb 6, 11:45 PM EST | Special Marine Warning | JAX | 30 min | |
| Feb 6, 11:50 PM EST | Special Marine Warning | JAX | 115 min | |
| Feb 6, 11:59 PM EST | Severe Thunderstorm Warning | JAX | Flagler | 16 min |
| Feb 7, 3:29 AM EST | Wind Advisory | JAX | Alachua, Baker, Bradford, Duval, Flagler, Gilchrist and 4 more | 10 hr |
| Feb 7, 1:52 PM EST | Frost Advisory | JAX | Alachua, Baker, Bradford, Gilchrist, Marion, Nassau and 2 more | 19 hr |
| Feb 7, 1:53 PM EST | Small Craft Advisory | JAX | 7 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2020Every severe thunderstorm warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.