Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 253, NWS Jacksonville, FL

June 27, 2008Alachua County, Marion County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 27, 2008, 5:03 PM EDT for Alachua County, Marion County, Florida. It was in force for 22 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 27, 2008, 5:03 PM EDT (21:03 UTC)
Expired
Jun 27, 2008, 5:25 PM EDT
In force
22 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Alachua County, FL, Marion County, FL

The radar

The Jacksonville radar (KJAX), 126 km from the middle of the area, began a volume at 21:03 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

Tampa Bay, FL (KTBW), launched 12:00Z, 9.1 hours before the alert went out and 194 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, Tampa Bay, FL at 12:00Z on 2008-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2167 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, Tampa Bay, FL at 12:00Z on 2008-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
2167 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
755 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 27, 2:37 PM EDT, 2 hours 26 minutes earlier.

Area forecast discussion, Jun 27, 2:37 PM EDT, 2 hours 26 minutes before
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Hazardous weather outlook, Jun 27, 4:40 AM EDT, 12 hours 23 minutes before
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In the hours before

Special weather statement, Jun 27, 3:24 PM EDT, 1 hour 39 minutes before
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Special weather statement, Jun 27, 3:25 PM EDT, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
325 PM EDT FRI JUN 27 2008

FLZ022-035-272015-
COLUMBIA-GILCHRIST-
325 PM EDT FRI JUN 27 2008

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR SOUTHWESTERN
COLUMBIA AND NORTHERN GILCHRIST COUNTIES FOR STRONG WINDS...SMALL
HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 415 PM EDT...

AT 325 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 3 MILES NORTHEAST OF BELL...MOVING
NORTHEAST AT 13 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS
AROUND BELL AND FORT WHITE THROUGH 415 PM EDT. HAIL UP TO ONE HALF
INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

DEESE
Special weather statement, Jun 27, 4:10 PM EDT, 53 minutes before
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Special weather statement, Jun 27, 4:13 PM EDT, 50 minutes before
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Special weather statement, Jun 27, 4:21 PM EDT, 42 minutes before
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Special weather statement, Jun 27, 4:31 PM EDT, 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
431 PM EDT FRI JUN 27 2008

FLZ025-272115-
DUVAL-
431 PM EDT FRI JUN 27 2008

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR WESTERN DUVAL
COUNTY FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID
UNTIL 515 PM EDT...

AT 431 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 3 MILES SOUTHEAST OF MAXVILLE...OR 13
MILES WEST OF LAKESIDE...MOVING EAST AT 11 MPH. THIS STRONG
THUNDERSTORM WILL ALSO AFFECT AREAS AROUND MAXVILLE THROUGH 515 PM
EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH
POSSIBLE MINOR DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

DEESE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 2:10 PM EDTSevere Thunderstorm WarningJAXColumbia, Gilchrist, Suwannee26 min
Jun 27, 4:38 PM EDTSevere Thunderstorm WarningJAXClay, Duval, Saint Johns28 min
Jun 27, 4:47 PM EDTSevere Thunderstorm WarningJAXAlachua28 min
Jun 27, 4:57 PM EDTAreal Flood AdvisoryJAXClay, Duval, Saint Johns2 hr
Jun 27, 5:05 PM EDTSevere Thunderstorm WarningJAXClay, Duval, Nassau29 min
Jun 27, 5:18 PM EDTAreal Flood AdvisoryJAXAlachua, Marion117 min
Jun 27, 5:26 PM EDTSpecial Marine WarningJAX94 min
Jun 27, 6:59 PM EDTSpecial Marine WarningJAX91 min

Nearby

Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning in 2008

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.