Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Jacksonville, FL

August 2, 2018Hamilton County, Florida

NWS Jacksonville, FL issued this special weather statement at Aug 2, 2018, 4:47 AM EDT for Hamilton County, Florida. It was in force for 28 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
Aug 2, 2018, 4:47 AM EDT (08:47 UTC)
Expired
Aug 2, 2018, 5:15 AM EDT
In force
28 min
Issued by
NWS Jacksonville, FL

County Hamilton County, FL

The radar

The Moody AFB radar (KVAX), 51 km from the middle of the area, began a volume at 08:51 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.8 hours before the alert went out and 106 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, Tallahassee Rgnl, FL at 00:00Z on 2018-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 479 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, Tallahassee Rgnl, FL at 00:00Z on 2018-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
479 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
830 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
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

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 Aug 2, 4:35 AM EDT, 12 minutes earlier.

Area forecast discussion, Aug 2, 4:35 AM EDT, 12 minutes before
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In the hours before

Local storm report, Aug 1, 11:01 PM EDT, 5 hours 46 minutes before
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    <section class="card" role="status" aria-live="polite">
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Special weather statement, Aug 2, 4:47 AM EDT, 0 minutes before
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:07 PM EDTSpecial Weather StatementJAXFlagler38 min
Aug 1, 8:27 PM EDTSpecial Marine WarningJAX44 min
Aug 1, 8:40 PM EDTSpecial Marine WarningJAX50 min
Aug 1, 9:15 PM EDTSpecial Marine WarningJAX60 min
Aug 1, 9:58 PM EDTSpecial Marine WarningJAX62 min
Aug 2, 2:02 PM EDTSpecial Weather StatementJAXAlachua43 min
Aug 2, 2:12 PM EDTSpecial Weather StatementJAXUnion48 min
Aug 2, 2:16 PM EDTSpecial Weather StatementJAXUnion29 min
Aug 2, 2:20 PM EDTSpecial Weather StatementJAXSuwannee40 min
Aug 2, 2:36 PM EDTSpecial Weather StatementJAXBaker39 min
Aug 2, 2:47 PM EDTSpecial Weather StatementJAXUnion43 min
Aug 2, 2:59 PM EDTSpecial Weather StatementJAXBaker46 min
Aug 2, 3:08 PM EDTSpecial Weather StatementJAXNassau52 min
Aug 2, 3:38 PM EDTSpecial Weather StatementJAXBradford37 min
Aug 2, 3:47 PM EDTSpecial Weather StatementJAXClay28 min
Aug 2, 3:50 PM EDTSpecial Weather StatementJAXAlachua25 min
Aug 2, 4:11 PM EDTSpecial Weather StatementJAXNassau49 min
Aug 2, 4:16 PM EDTSpecial Weather StatementJAXMarion44 min
Aug 2, 4:34 PM EDTSpecial Weather StatementJAXMarion41 min
Aug 2, 4:47 PM EDTSpecial Weather StatementJAXClay, Duval, Nassau43 min
Aug 2, 4:55 PM EDTSpecial Weather StatementJAXMarion50 min
Aug 2, 5:09 PM EDTAreal Flood AdvisoryJAXClay, Duval, Nassau66 min
Aug 2, 5:16 PM EDTSpecial Weather StatementJAXDuval44 min
Aug 2, 5:20 PM EDTSpecial Weather StatementJAXPutnam40 min
Aug 2, 5:27 PM EDTSpecial Marine WarningJAX77 min
Aug 2, 5:44 PM EDTSpecial Weather StatementJAXPutnam46 min
Aug 2, 5:48 PM EDTSpecial Weather StatementJAXAlachua27 min
Aug 2, 6:14 PM EDTAreal Flood WarningJAXDuval61 min
Aug 2, 6:22 PM EDTAreal Flood AdvisoryJAXClay, Putnam, Saint Johns53 min
Aug 2, 6:51 PM EDTAreal Flood AdvisoryJAXBradford, Union54 min
Aug 2, 7:07 PM EDTSpecial Weather StatementJAXFlagler38 min
Aug 2, 12:23 PM EDTSpecial Weather StatementJAXCoffee22 min
Aug 2, 1:45 PM EDTSpecial Weather StatementJAXCoffee45 min
Aug 2, 2:06 PM EDTSpecial Weather StatementJAXWayne39 min
Aug 2, 2:50 PM EDTSpecial Weather StatementJAXAppling40 min
Aug 2, 2:55 PM EDTSpecial Weather StatementJAXEchols50 min
Aug 2, 3:25 PM EDTSpecial Weather StatementJAXAppling50 min
Aug 2, 3:27 PM EDTSpecial Weather StatementJAXPierce, Ware48 min
Aug 2, 3:30 PM EDTSpecial Weather StatementJAXCharlton45 min
Aug 2, 3:52 PM EDTSevere Thunderstorm WarningJAXBrantley, Charlton23 min
Aug 2, 3:54 PM EDTSevere Thunderstorm WarningJAXBrantley, Pierce, Ware21 min
Aug 2, 4:14 PM EDTAreal Flood AdvisoryJAXAppling, Bacon, Brantley, Camden, Charlton, Pierce and 2 more61 min
Aug 2, 4:15 PM EDTSpecial Weather StatementJAXBrantley45 min
Aug 2, 4:36 PM EDTSpecial Weather StatementJAXWayne24 min
Aug 2, 4:37 PM EDTSpecial Weather StatementJAXGlynn38 min
Aug 2, 4:57 PM EDTSpecial Weather StatementJAXAppling, Wayne48 min

Nearby

Special Weather Statements in Florida, 2018Every special weather statement 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.