Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

June 15, 2021Marion County, Florida

NWS Jacksonville, FL issued this special weather statement at Jun 15, 2021, 9:39 PM EDT for Marion County, Florida. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 15, 2021, 9:39 PM EDT (01:39 UTC)
Expired: Jun 15, 2021, 10:30 PM EDT
In force: 51 min
Issued by: NWS Jacksonville, FL

County Marion County, FL

The radar

The Tampa radar (KTBW), 149 km from the middle of the area, began a volume at 01:39 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 00:00Z, 1.7 hours before the alert went out and 169 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: 362 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 1178 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 273 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 15, 9:10 PM EDT, 29 minutes earlier.

Area forecast discussion, Jun 15, 9:10 PM EDT, 29 minutes before

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In the hours before

Local storm report, Jun 15, 8:24 PM EDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
824 PM EDT TUE JUN 15 2021

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

0606 PM     NON-TSTM WND GST 2 N MAYPORT             30.42N 81.41W
06/15/2021  M60 MPH          AMZ452             FL   MESONET

            MESONET STATION XHUP HUGUENOT PARK.

&&

AK

Local storm report, Jun 15, 8:25 PM EDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
825 PM EDT TUE JUN 15 2021

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

0601 PM     TSTM WND GST     1 ENE FORT CAROLINE     30.39N 81.48W
06/15/2021  M59 MPH          DUVAL              FL   MESONET

            MESONET STATION XJAK JACKSONVILLE.

&&

AK

Special weather statement, Jun 15, 8:54 PM EDT, 45 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
854 PM EDT Tue Jun 15 2021

FLZ136-140-236-240-340-160145-
Eastern Alachua FL-Western Alachua FL-Central Marion FL-
Western Marion FL-Eastern Marion FL-
854 PM EDT Tue Jun 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL ALACHUA AND CENTRAL
MARION COUNTIES UNTIL 945 PM EDT...

* At 854 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm 7 miles southeast of Williston,
  moving southeast at 25 mph.

* Small hail, winds in excess of 45 mph, and minor flooding due to
  heavy rainfall is possible with this storm.

* Locations impacted include...
  Ocala, Sparr, Anthony, Silver Springs Shores, Santos, Ocala
  Airport, Belleview, Reddick, McIntosh and Flemington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

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

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 2897 8209 2921 8249 2922 8240 2949 8241
      2953 8239 2930 8187
TIME...MOT...LOC 0054Z 305DEG 22KT 2930 8236

23

Local storm report, Jun 15, 9:24 PM EDT, 15 minutes before

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Special weather statement, Jun 15, 9:34 PM EDT, 5 minutes before

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Special weather statement, Jun 15, 9:39 PM EDT, 0 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
Jun 15, 8:54 PM EDT	Special Weather Statement	JAX	Marion	51 min
Jun 15, 8:58 PM EDT	Severe Thunderstorm Warning	JAX	Marion	32 min
Jun 16, 4:42 PM EDT	Special Weather Statement	JAX	Saint Johns	48 min
Jun 16, 5:03 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	42 min
Jun 16, 5:04 PM EDT	Special Marine Warning	JAX		56 min
Jun 16, 5:27 PM EDT	Special Weather Statement	JAX	Saint Johns	48 min
Jun 16, 5:42 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	34 min
Jun 16, 5:48 PM EDT	Special Marine Warning	JAX		87 min
Jun 16, 6:51 PM EDT	Special Marine Warning	JAX		54 min
Jun 16, 6:58 PM EDT	Special Marine Warning	JAX		92 min
Jun 15, 9:34 PM EDT	Special Weather Statement	JAX	Bacon, Pierce	26 min
Jun 16, 6:52 PM EDT	Special Weather Statement	JAX	Glynn	38 min
Jun 16, 6:56 PM EDT	Severe Thunderstorm Warning	JAX	Camden, Glynn	49 min
Jun 16, 7:45 PM EDT	Special Weather Statement	JAX	Camden	45 min

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement in 2021

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.