Alert archive / Florida / Areal Flood Warnings in 2021

Areal Flood Warning 1, NWS Jacksonville, FL

February 14, 20214 counties in Florida

NWS Jacksonville, FL issued this areal flood warning at Feb 14, 2021, 3:21 PM EST for 4 counties in Florida. It was in force for 114 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: Feb 14, 2021, 3:21 PM EST (20:21 UTC)
Expired: Feb 14, 2021, 5:15 PM EST
In force: 114 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Flood severity: None

Counties Clay County, FL, Flagler County, FL, Putnam County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 83 km from the middle of the area, began a volume at 20:20 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.4 hours before the alert went out and 176 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: 535 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 534 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood warning went out at Feb 14, 3:12 PM EST, 9 minutes earlier.

Area forecast discussion, Feb 14, 3:12 PM EST, 9 minutes before

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In the hours before

Special weather statement, Feb 14, 2:40 PM EST, 41 minutes before

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Local storm report, Feb 14, 3:05 PM EST, 16 minutes before

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Local storm report, Feb 14, 3:08 PM EST, 13 minutes before

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Local storm report, Feb 14, 3:10 PM EST, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
310 PM EST SUN FEB 14 2021

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

0254 PM     HAIL             1 S BAKERSVILLE         29.88N 81.49W
02/14/2021  E0.25 INCH       ST. JOHNS          FL   STORM CHASER

            PEA SIZE HAIL NEAR COUNTY ROAD 13A NEAR
            BAKERSVILLE.

&&

KC

Special weather statement, Feb 14, 3:17 PM EST, 4 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
317 PM EST Sun Feb 14 2021

FLZ038-133-138-142045-
Coastal Flagler FL-Coastal St. Johns FL-Inland Flagler FL-
317 PM EST Sun Feb 14 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL FLAGLER AND
EXTREME SOUTHEASTERN ST. JOHNS COUNTIES UNTIL 345 PM EST...

* At 317 PM EST, National Weather Service meteorologists were
  tracking a strong thunderstorm 7 miles northeast of Andalusia,
  moving northeast at 50 mph. Rotation was detected with this storm,
  and a brief funnel cloud is possible.

* Small hail, funnel clouds, and winds in excess of 45 mph possible
  with this storm.

* Locations impacted include...
  Marineland.

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 2965 8118 2953 8138 2958 8140 2963 8134
      2963 8132 2965 8131 2964 8131 2965 8130
      2965 8128 2967 8129 2971 8123
TIME...MOT...LOC 2017Z 231DEG 45KT 2957 8138

WOLF

Local storm report, Feb 14, 3:21 PM EST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
321 PM EST SUN FEB 14 2021

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

0229 PM     FUNNEL CLOUD     2 S BAKERSVILLE         29.88N 81.49W
02/14/2021                   ST. JOHNS          FL   STORM CHASER

            RAIN WRAPPED FUNNEL CLOUD NEAR COUNTY ROAD
            13A.

&&

KC

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 14, 4:56 AM EST	Special Marine Warning	JAX		40 min
Feb 14, 12:37 PM EST	Special Weather Statement	JAX	Alachua, Bradford, Gilchrist, Union	53 min
Feb 14, 1:13 PM EST	Special Weather Statement	JAX	Putnam	47 min
Feb 14, 1:24 PM EST	Special Weather Statement	JAX	Alachua	51 min
Feb 14, 1:43 PM EST	Severe Thunderstorm Warning	JAX	Clay, Putnam	47 min
Feb 14, 1:48 PM EST	Tornado Warning	JAX	Clay, Putnam	27 min
Feb 14, 2:13 PM EST	Tornado Warning	JAX	Putnam, Saint Johns	32 min
Feb 14, 2:40 PM EST	Special Weather Statement	JAX	Putnam, Saint Johns	65 min
Feb 14, 2:40 PM EST	Tornado Warning	JAX	Saint Johns	35 min
Feb 14, 2:43 PM EST	Special Marine Warning	JAX		62 min
Feb 14, 2:44 PM EST	Special Marine Warning	JAX		61 min
Feb 14, 3:17 PM EST	Special Weather Statement	JAX	Flagler	28 min
Feb 14, 3:41 PM EST	Special Marine Warning	JAX		64 min
Feb 14, 4:42 PM EST	Special Marine Warning	JAX		48 min

Nearby

Areal Flood Warnings in Florida, 2021 Every areal flood warning 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.