Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

June 24, 2021Columbia County, Florida

NWS Jacksonville, FL issued this special weather statement at Jun 24, 2021, 1:29 PM EDT for Columbia County, Florida. It was in force for 46 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 24, 2021, 1:29 PM EDT (17:29 UTC)
Expired
Jun 24, 2021, 2:15 PM EDT
In force
46 min
Issued by
NWS Jacksonville, FL

County Columbia County, FL

The radar

The Moody AFB radar (KVAX), 73 km from the middle of the area, began a volume at 17:28 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, 5.5 hours before the alert went out and 90 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 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1889 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 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
1889 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
626 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 24, 10:30 AM EDT, 2 hours 59 minutes earlier.

Area forecast discussion, Jun 24, 10:30 AM EDT, 2 hours 59 minutes before
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In the hours before

Special weather statement, Jun 24, 10:05 AM EDT, 3 hours 24 minutes before
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Special weather statement, Jun 24, 11:41 AM EDT, 1 hour 48 minutes before
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Special weather statement, Jun 24, 12:23 PM EDT, 1 hour 6 minutes before
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Special weather statement, Jun 24, 12:42 PM EDT, 47 minutes before
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Special weather statement, Jun 24, 12:55 PM EDT, 34 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
1255 PM EDT Thu Jun 24 2021

FLZ020-241745-
Hamilton FL-
1255 PM EDT Thu Jun 24 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HAMILTON COUNTY
UNTIL 145 PM EDT...

* At 1255 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Jasper, moving west at 5 mph.

* Wind gusts up to 50 mph, excessive cloud-to-ground lightning, and
  minor flooding due to heavy rainfall is possible with this storm.

* Locations impacted include...
  Jasper, Jennings and Crossroads.

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 3062 8306 3056 8305 3049 8289 3046 8290
      3046 8317 3063 8320
TIME...MOT...LOC 1655Z 085DEG 5KT 3055 8300

SHASHY
Special weather statement, Jun 24, 1:29 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
129 PM EDT Thu Jun 24 2021

FLZ020-122-222-241815-
Southern Columbia FL-Hamilton FL-Northern Columbia FL-
129 PM EDT Thu Jun 24 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL COLUMBIA AND SOUTHEASTERN
HAMILTON COUNTIES UNTIL 215 PM EDT...

* At 129 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Winfield, or 7 miles north of
  Lake City, moving northwest at 10 mph.

* Winds in excess of 45 mph and minor flooding due to heavy rainfall
  is possible with this storm.

* Locations impacted include...
  White Springs, Winfield, Suwannee Valley, Five Points and Belmont.

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 3033 8249 3021 8253 3019 8261 3037 8281
      3051 8276
TIME...MOT...LOC 1729Z 118DEG 9KT 3029 8262

SHASHY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 12:23 PM EDTSpecial Weather StatementJAXHamilton82 min
Jun 24, 12:55 PM EDTSpecial Weather StatementJAXHamilton50 min
Jun 24, 1:47 PM EDTSpecial Weather StatementJAXHamilton58 min
Jun 24, 1:57 PM EDTAreal Flood WarningJAXColumbia, Hamilton2 hr
Jun 24, 2:17 PM EDTSpecial Weather StatementJAXPutnam28 min
Jun 24, 2:19 PM EDTSpecial Weather StatementJAXUnion41 min
Jun 24, 2:21 PM EDTSpecial Weather StatementJAXBaker39 min
Jun 24, 3:03 PM EDTSpecial Weather StatementJAXAlachua, Columbia, Union42 min
Jun 24, 3:06 PM EDTAreal Flood WarningJAXBaker, Columbia, Duval, Nassau114 min
Jun 24, 3:11 PM EDTSpecial Weather StatementJAXClay49 min
Jun 24, 3:44 PM EDTSpecial Weather StatementJAXAlachua, Bradford, Gilchrist46 min
Jun 24, 4:01 PM EDTSpecial Weather StatementJAXClay44 min
Jun 24, 4:13 PM EDTSpecial Weather StatementJAXFlagler62 min
Jun 24, 4:23 PM EDTAreal Flood WarningJAXAlachua, Bradford2 hr
Jun 24, 4:29 PM EDTSpecial Weather StatementJAXMarion31 min
Jun 24, 4:32 PM EDTSpecial Weather StatementJAXAlachua43 min
Jun 24, 4:35 PM EDTSpecial Weather StatementJAXFlagler40 min
Jun 24, 4:40 PM EDTSpecial Weather StatementJAXClay65 min
Jun 24, 4:59 PM EDTSpecial Weather StatementJAXPutnam46 min
Jun 24, 5:15 PM EDTSpecial Weather StatementJAXFlagler, Putnam45 min
Jun 24, 5:41 PM EDTSpecial Weather StatementJAXDuval49 min
Jun 24, 5:56 PM EDTSpecial Weather StatementJAXPutnam64 min
Jun 24, 6:54 PM EDTSmall Craft AdvisoryJAX8 hr
Jun 23, 10:02 PM EDTSpecial Weather StatementJAXAtkinson, Bacon, Coffee43 min
Jun 23, 10:52 PM EDTSpecial Weather StatementJAXAtkinson, Coffee38 min
Jun 23, 11:03 PM EDTSpecial Weather StatementJAXJeff Davis42 min
Jun 24, 12:19 AM EDTSpecial Weather StatementJAXJeff Davis41 min
Jun 24, 1:58 AM EDTSpecial Weather StatementJAXCoffee47 min
Jun 24, 10:05 AM EDTSpecial Weather StatementJAXAppling70 min
Jun 24, 11:41 AM EDTSpecial Weather StatementJAXWare94 min
Jun 24, 12:42 PM EDTSpecial Weather StatementJAXCamden48 min

Nearby

Special Weather Statements in Florida, 2021Every 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.