Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 165, NWS Jacksonville, FL

July 22, 2018Columbia County, Hamilton County, Suwannee County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 22, 2018, 6:58 PM EDT for Columbia County, Hamilton County, Suwannee County, Florida. It was in force for 36 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: Jul 22, 2018, 6:58 PM EDT (22:58 UTC)
Expired: Jul 22, 2018, 7:34 PM EDT
In force: 36 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Columbia County, FL, Hamilton County, FL, Suwannee County, FL

The radar

The Moody AFB radar (KVAX), 67 km from the middle of the area, began a volume at 22:59 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 22, 11:15 AM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 11.0 hours before the alert went out and 113 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2402 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 848 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 6.1

Open this sounding in Storm Lab

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 Jul 22, 4:08 PM EDT, 2 hours 50 minutes earlier.

Area forecast discussion, Jul 22, 4:08 PM EDT, 2 hours 50 minutes before

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In the hours before

Special weather statement, Jul 22, 6:07 PM EDT, 51 minutes before

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Special weather statement, Jul 22, 6:20 PM EDT, 38 minutes before

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Special weather statement, Jul 22, 6:31 PM EDT, 27 minutes before

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Special weather statement, Jul 22, 6:34 PM EDT, 24 minutes before

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Special weather statement, Jul 22, 6:47 PM EDT, 11 minutes before

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Special weather statement, Jul 22, 6:54 PM EDT, 4 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
654 PM EDT SUN JUL 22 2018

FLZ036-040-222345-
Alachua FL-Marion FL-
654 PM EDT SUN JUL 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN ALACHUA AND WESTERN
MARION COUNTIES UNTIL 745 PM EDT...

At 654 PM EDT, Doppler radar was tracking a strong thunderstorm near
Rainbow Lakes Estates, moving east at 40 mph.

Excessive cloud-to-ground lightning and wind gusts of 45 to 55 mph
can be expected along with possible minor damage.

Locations impacted include...
Ocala, Rainbow Lakes Estates, Citra, Archer, Sparr, Anthony, Cross
Creek, Santos, Ocala Airport and Silver Springs Shores.

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.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
northern and northeastern Florida.

LAT...LON 2897 8232 2902 8240 2902 8242 2905 8247
      2904 8250 2904 8253 2921 8254 2922 8240
      2925 8240 2948 8241 2948 8255 2959 8254
      2958 8206 2947 8206 2949 8203 2950 8199
      2896 8202 2896 8231
TIME...MOT...LOC 2254Z 280DEG 35KT 2916 8253

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 11:07 AM EDT	Special Marine Warning	JAX		53 min
Jul 22, 11:10 AM EDT	Special Weather Statement	JAX	Alachua, Bradford, Union	50 min
Jul 22, 11:21 AM EDT	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Gilchrist	39 min
Jul 22, 11:36 AM EDT	Severe Thunderstorm Warning	JAX	Columbia, Suwannee	39 min
Jul 22, 11:41 AM EDT	Severe Thunderstorm Warning	JAX	Clay, Putnam	35 min
Jul 22, 11:46 AM EDT	Severe Thunderstorm Warning	JAX	Flagler	28 min
Jul 22, 11:54 AM EDT	Special Marine Warning	JAX		30 min
Jul 22, 12:05 PM EDT	Special Weather Statement	JAX	Alachua, Bradford, Union	25 min
Jul 22, 12:12 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Union	48 min
Jul 22, 12:18 PM EDT	Special Weather Statement	JAX	Saint Johns	42 min
Jul 22, 12:23 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Putnam, Saint Johns	52 min
Jul 22, 12:34 PM EDT	Severe Thunderstorm Warning	JAX	Marion, Putnam	41 min
Jul 22, 12:38 PM EDT	Special Marine Warning	JAX		52 min
Jul 22, 12:41 PM EDT	Special Weather Statement	JAX	Alachua, Bradford	49 min
Jul 22, 12:43 PM EDT	Severe Thunderstorm Warning	JAX	Duval	32 min
Jul 22, 12:48 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Putnam, Saint Johns	42 min
Jul 22, 12:51 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford, Columbia, Union	3 hr
Jul 22, 12:51 PM EDT	Areal Flood Advisory	JAX	Putnam, Saint Johns	3 hr
Jul 22, 12:58 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Union	47 min
Jul 22, 1:06 PM EDT	Severe Thunderstorm Warning	JAX	Clay	40 min
Jul 22, 1:12 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford	3 hr
Jul 22, 1:22 PM EDT	Special Weather Statement	JAX	Putnam	53 min
Jul 22, 1:25 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Duval, Nassau	50 min
Jul 22, 1:26 PM EDT	Severe Thunderstorm Warning	JAX	Alachua	34 min
Jul 22, 1:29 PM EDT	Special Weather Statement	JAX	Flagler	46 min
Jul 22, 1:31 PM EDT	Severe Thunderstorm Warning	JAX	Putnam	44 min
Jul 22, 1:33 PM EDT	Special Weather Statement	JAX	Gilchrist	42 min
Jul 22, 1:38 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Columbia, Suwannee, Union	52 min
Jul 22, 1:43 PM EDT	Areal Flood Warning	JAX	Alachua	3 hr
Jul 22, 1:48 PM EDT	Special Weather Statement	JAX	Clay, Saint Johns	42 min
Jul 22, 1:54 PM EDT	Areal Flood Warning	JAX	Alachua, Columbia, Suwannee, Union	3 hr
Jul 22, 2:01 PM EDT	Special Weather Statement	JAX	Alachua	29 min
Jul 22, 2:04 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	41 min
Jul 22, 2:07 PM EDT	Areal Flood Advisory	JAX	Duval, Nassau	113 min
Jul 22, 2:10 PM EDT	Areal Flood Advisory	JAX	Alachua, Clay, Flagler, Marion, Putnam, Saint Johns	2 hr
Jul 22, 2:13 PM EDT	Special Marine Warning	JAX		46 min
Jul 22, 2:15 PM EDT	Areal Flood Warning	JAX	Alachua, Bradford, Union	3 hr
Jul 22, 2:19 PM EDT	Special Weather Statement	JAX	Marion	41 min
Jul 22, 2:20 PM EDT	Special Weather Statement	JAX	Bradford, Union	40 min
Jul 22, 2:23 PM EDT	Areal Flood Warning	JAX	Alachua, Marion, Putnam	3 hr
Jul 22, 2:24 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Columbia, Gilchrist, Suwannee	51 min
Jul 22, 2:31 PM EDT	Areal Flood Advisory	JAX	Marion	3 hr
Jul 22, 2:32 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Bradford, Columbia, Union	28 min
Jul 22, 2:35 PM EDT	Special Weather Statement	JAX	Alachua	25 min
Jul 22, 2:42 PM EDT	Severe Thunderstorm Warning	JAX	Marion	36 min
Jul 22, 2:45 PM EDT	Areal Flood Advisory	JAX	Bradford, Columbia, Union	2 hr
Jul 22, 2:48 PM EDT	Areal Flood Advisory	JAX	Alachua, Columbia, Gilchrist, Suwannee	117 min
Jul 22, 3:03 PM EDT	Special Weather Statement	JAX	Alachua	27 min
Jul 22, 3:06 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Union	24 min
Jul 22, 3:09 PM EDT	Flash Flood Warning	JAX	Alachua, Columbia, Union	113 min
Jul 22, 3:12 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	33 min
Jul 22, 3:16 PM EDT	Special Weather Statement	JAX	Union	44 min
Jul 22, 3:20 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Columbia, Gilchrist	40 min
Jul 22, 3:21 PM EDT	Areal Flood Warning	JAX	Alachua, Columbia, Gilchrist, Suwannee	3 hr
Jul 22, 3:21 PM EDT	Tornado Warning	JAX	Alachua, Columbia	24 min
Jul 22, 3:38 PM EDT	Areal Flood Warning	JAX	Marion, Putnam	3 hr
Jul 22, 3:41 PM EDT	Areal Flood Warning	JAX	Columbia, Union	61 min
Jul 22, 3:47 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Suwannee	12 min
Jul 22, 3:52 PM EDT	Special Weather Statement	JAX	Alachua, Marion, Putnam	38 min
Jul 22, 4:02 PM EDT	Special Weather Statement	JAX	Suwannee	43 min
Jul 22, 4:06 PM EDT	Areal Flood Advisory	JAX	Alachua, Marion	114 min
Jul 22, 4:07 PM EDT	Severe Thunderstorm Warning	JAX	Gilchrist, Suwannee	23 min
Jul 22, 4:19 PM EDT	Flash Flood Warning	JAX	Columbia, Gilchrist, Suwannee	74 min
Jul 22, 4:31 PM EDT	Areal Flood Warning	JAX	Marion	119 min
Jul 22, 4:31 PM EDT	Special Weather Statement	JAX	Gilchrist	29 min
Jul 22, 4:38 PM EDT	Areal Flood Warning	JAX	Alachua, Gilchrist	3 hr
Jul 22, 4:43 PM EDT	Special Weather Statement	JAX	Marion	32 min
Jul 22, 5:00 PM EDT	Areal Flood Warning	JAX	Marion	2 hr
Jul 22, 5:01 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	29 min
Jul 22, 5:15 PM EDT	Areal Flood Warning	JAX	Alachua, Marion	83 min
Jul 22, 5:17 PM EDT	Special Weather Statement	JAX	Marion	28 min
Jul 22, 5:47 PM EDT	Special Weather Statement	JAX	Suwannee	28 min
Jul 22, 6:05 PM EDT	Special Weather Statement	JAX	Gilchrist	40 min
Jul 22, 6:07 PM EDT	Special Weather Statement	JAX	Hamilton	38 min
Jul 22, 6:14 PM EDT	River Flood Warning	JAX	Alachua, Union	16 days
Jul 22, 6:14 PM EDT	River Flood Warning	JAX	Alachua, Columbia	20 days
Jul 22, 6:20 PM EDT	Special Weather Statement	JAX	Marion	40 min
Jul 22, 6:31 PM EDT	Special Weather Statement	JAX	Suwannee	44 min
Jul 22, 6:47 PM EDT	Special Weather Statement	JAX	Gilchrist	43 min
Jul 22, 6:54 PM EDT	Special Weather Statement	JAX	Marion	51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.