Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 97, NWS Jacksonville, FL

June 17, 2018Alachua County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 17, 2018, 4:15 PM EDT for Alachua County, Florida. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 17, 2018, 4:15 PM EDT (20:15 UTC)
Expired: Jun 17, 2018, 4:45 PM EDT
In force: 30 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Alachua County, FL

The radar

The Jacksonville radar (KJAX), 110 km from the middle of the area, began a volume at 20:17 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 forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 17, 9:28 AM EDT, 6 hours 47 minutes earlier.

Area forecast discussion, Jun 17, 9:28 AM EDT, 6 hours 47 minutes before

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In the hours before

Special weather statement, Jun 17, 2:46 PM EDT, 1 hour 29 minutes before

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Special weather statement, Jun 17, 3:46 PM EDT, 29 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
346 PM EDT SUN JUN 17 2018

GAZ149-163-172015-
Atkinson GA-Clinch GA-
346 PM EDT SUN JUN 17 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ATKINSON AND
NORTHWESTERN CLINCH COUNTIES UNTIL 415 PM EDT...

At 346 PM EDT, Doppler radar was tracking a strong thunderstorm near
Pearson, moving southeast at 15 mph.

Excessive cloud-to-ground lightning and wind gusts of 45 to 50 mph
can be expected along with torrential rainfall.

Locations impacted include...
Pearson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3123 8305 3126 8304 3127 8303 3128 8304
      3135 8290 3118 8269 3108 8297 3118 8297
      3118 8304 3121 8305
TIME...MOT...LOC 1946Z 325DEG 12KT 3126 8294

ELSENHEIMER

Special weather statement, Jun 17, 3:57 PM EDT, 18 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
357 PM EDT SUN JUN 17 2018

FLZ036-172045-
Alachua FL-
357 PM EDT SUN JUN 17 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ALACHUA COUNTY UNTIL
445 PM EDT...

At 356 PM EDT, Doppler radar was tracking a strong thunderstorm over
Gainesville Airport, or near Gainesville, moving south at 15 mph.

Wind gusts up to 55 mph can be expected along with possible minor
wind damage.

Locations impacted include...
Gainesville, University Of Florida, Gainesville Airport, Rochelle,
Newnans Lake, Micanopy and Grove Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2974 8234 2973 8216 2951 8212 2951 8243
      2966 8236
TIME...MOT...LOC 1956Z 005DEG 14KT 2967 8227

ELSENHEIMER

Local storm report, Jun 17, 4:04 PM EDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Jacksonville FL
404 PM EDT SUN JUN 17 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0353 PM     TSTM WND GST     GAINESVILLE             29.67N 82.34W
06/17/2018  M54 MPH          ALACHUA            FL   ASOS

            THE GAINESVILLE AIRPORT ASOS RECORDED A WIND GUST OF 54
            MPH.

&&

RBRICKER

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 2:46 PM EDT	Special Weather Statement	JAX	Flagler	29 min
Jun 17, 2:56 PM EDT	Areal Flood Advisory	JAX	Flagler, Saint Johns	2 hr
Jun 17, 3:57 PM EDT	Special Weather Statement	JAX	Alachua	48 min
Jun 17, 4:45 PM EDT	Areal Flood Advisory	JAX	Alachua	90 min
Jun 17, 5:58 PM EDT	Special Weather Statement	JAX	Marion	32 min
Jun 17, 6:04 PM EDT	Severe Thunderstorm Warning	JAX	Marion	26 min
Jun 17, 6:14 PM EDT	Special Weather Statement	JAX	Hamilton	31 min
Jun 17, 6:29 PM EDT	Special Weather Statement	JAX	Marion	31 min
Jun 16, 9:12 PM EDT	Areal Flood Advisory	JAX	Pierce, Wayne	93 min
Jun 17, 3:46 PM EDT	Special Weather Statement	JAX	Atkinson	29 min
Jun 17, 5:38 PM EDT	Special Weather Statement	JAX	Echols	37 min

Nearby

Severe Thunderstorm Warnings in Florida, 2018 Every severe thunderstorm warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.