Alert archive / Florida / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 83, NWS Jacksonville, FL

June 22, 2019Clay County, Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 22, 2019, 7:01 PM EDT for Clay County, Saint Johns County, Florida. It was in force for 44 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 22, 2019, 7:01 PM EDT (23:01 UTC)
Expired
Jun 22, 2019, 7:45 PM EDT
In force
44 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Clay County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 60 km from the middle of the area, began a volume at 23:04 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 nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 11.0 hours before the alert went out and 62 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2019-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2488 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2019-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2488 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1001 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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 Jun 22, 3:50 PM EDT, 3 hours 11 minutes earlier.

Area forecast discussion, Jun 22, 3:50 PM EDT, 3 hours 11 minutes before
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In the hours before

Local storm report, Jun 22, 4:00 PM EDT, 3 hours 1 minute before
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Special weather statement, Jun 22, 4:20 PM EDT, 2 hours 41 minutes before
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Special weather statement, Jun 22, 5:49 PM EDT, 1 hour 12 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
549 PM EDT Sat Jun 22 2019

GAZ134-135-151-222230-
Pierce GA-Bacon GA-Appling GA-
549 PM EDT Sat Jun 22 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PIERCE...CENTRAL
BACON AND SOUTHERN APPLING COUNTIES UNTIL 630 PM EDT...

* At 548 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Surrency, moving south at 15
  mph.

* Penny size hail, excessive cloud-to-ground lightning, and winds in
  excess of 45 mph possible with this storm.

* Locations impacted include...
  Baxley, Alma, Surrency, Bristol and New Lacy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

LAT...LON 3178 8243 3172 8217 3142 8216 3147 8248
TIME...MOT...LOC 2148Z 003DEG 14KT 3166 8229

PETERSON
Local storm report, Jun 22, 6:16 PM EDT, 45 minutes before
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Special weather statement, Jun 22, 6:19 PM EDT, 42 minutes before
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Special weather statement, Jun 22, 6:54 PM EDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 3:43 PM EDTSpecial Marine WarningJAX44 min
Jun 22, 6:54 PM EDTSpecial Weather StatementJAXSaint Johns51 min
Jun 22, 2:43 PM EDTSpecial Weather StatementJAXGlynn32 min
Jun 22, 3:22 PM EDTSpecial Weather StatementJAXGlynn23 min
Jun 22, 3:47 PM EDTSpecial Weather StatementJAXGlynn13 min
Jun 22, 4:20 PM EDTSpecial Weather StatementJAXWayne25 min
Jun 22, 5:49 PM EDTSpecial Weather StatementJAXAppling, Bacon41 min
Jun 22, 6:19 PM EDTSpecial Weather StatementJAXWayne41 min

Nearby

Severe Thunderstorm Warnings in Florida, 2019Every severe thunderstorm warning in 2019

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.