Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 164, NWS Jacksonville, FL

July 22, 2018Suwannee County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 22, 2018, 5:01 PM EDT for Suwannee County, Florida. It was in force for 29 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, 5:01 PM EDT (21:01 UTC)
Expired: Jul 22, 2018, 5:30 PM EDT
In force: 29 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Suwannee County, FL

The radar

The Moody AFB radar (KVAX), 77 km from the middle of the area, began a volume at 21:05 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.0 hours before the alert went out and 128 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: 3735 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 7.6

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, 53 minutes earlier.

Area forecast discussion, Jul 22, 4:08 PM EDT, 53 minutes before

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In the hours before

Special weather statement, Jul 22, 3:03 PM EDT, 1 hour 58 minutes before

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

FLZ036-040-221930-
Alachua FL-Marion FL-
303 PM EDT SUN JUL 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ALACHUA AND NORTH
CENTRAL MARION COUNTIES UNTIL 330 PM EDT...

At 303 PM EDT, Doppler radar was tracking a strong thunderstorm near
Cross Creek, or 9 miles northwest of Citra, moving east at 25 mph.

Nickel size hail and wind gusts of 45 to 55 mph can be expected along
with possible minor damage.

Locations impacted include...
Hawthorne, Cross Creek, Rochelle, Micanopy, McIntosh, Lochloosa and
Grove Park.

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

LAT...LON 2948 8235 2954 8235 2967 8206 2958 8205
      2947 8206 2942 8230
TIME...MOT...LOC 1903Z 257DEG 21KT 2950 8224

MCGINNIS

Special weather statement, Jul 22, 3:16 PM EDT, 1 hour 45 minutes before

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

FLZ021-022-030-031-035-036-222000-
Columbia FL-Union FL-Suwannee FL-Alachua FL-Bradford FL-Gilchrist FL-
316 PM EDT SUN JUL 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GILCHRIST...
NORTHWESTERN ALACHUA...WEST CENTRAL BRADFORD...SOUTHWESTERN UNION...
SOUTHWESTERN COLUMBIA AND SOUTHEASTERN SUWANNEE COUNTIES UNTIL 400 PM
EDT...

At 316 PM EDT, Doppler radar was tracking a strong thunderstorm near
Fort White, or near Ichetucknee Spring, moving east at 20 mph.

Nickel size hail and wind gusts of 45 to 55 mph can be expected along
with possible minor damage.

Locations impacted include...
Worthington Spring, Ichetucknee Spring, Alachua, High Springs, Fort
White, Worthington Springs, Groves, Providence, Beasley and Upland
Pines.

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

LAT...LON 2984 8276 2994 8286 3002 8273 3000 8227
      2973 8232
TIME...MOT...LOC 1916Z 279DEG 18KT 2992 8266

MCGINNIS

Special weather statement, Jul 22, 3:52 PM EDT, 1 hour 9 minutes before

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Special weather statement, Jul 22, 4:02 PM EDT, 59 minutes before

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Special weather statement, Jul 22, 4:31 PM EDT, 30 minutes before

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Special weather statement, Jul 22, 4:43 PM EDT, 18 minutes before

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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, 5:15 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
Jul 22, 6:58 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton, Suwannee	36 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.