Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 71, NWS Jacksonville, FL

June 1, 2015Flagler County, Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 1, 2015, 2:21 PM EDT for Flagler County, Saint Johns County, Florida. It was in force for 39 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 1, 2015, 2:21 PM EDT (18:21 UTC)
Expired
Jun 1, 2015, 3:00 PM EDT
In force
39 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Flagler County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 94 km from the middle of the area, began a volume at 18:24 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, 6.4 hours before the alert went out and 96 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 2015-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 284 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 2015-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
284 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1038 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
34 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 1, 8:26 AM EDT, 5 hours 55 minutes earlier.

Area forecast discussion, Jun 1, 8:26 AM EDT, 5 hours 55 minutes before
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Hazardous weather outlook, Jun 1, 4:35 AM EDT, 9 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
435 AM EDT MON JUN 1 2015

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125-
GAZ132>136-149>154-162>166-021045-
COASTAL WATERS FROM ALTAMAHA SOUND
TO FERNANDINA BEACH FL OUT 20 NM-COASTAL WATERS FROM FERNANDINA
BEACH TO ST. AUGUSTINE FL OUT 20 NM-COASTAL WATERS FROM ST.
AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM-WATERS FROM ALTAMAHA SOUND
GA TO FERNANDINA BEACH FL FROM 20 TO 60 NM-WATERS FROM FERNANDINA
BEACH TO ST. AUGUSTINE FL FROM 20 TO 60 NM-WATERS FROM ST. AUGUSTINE
TO FLAGLER BEACH FL FROM 20 TO 60 NM-HAMILTON-SUWANNEE-COLUMBIA-
BAKER-INLAND NASSAU-INLAND DUVAL-UNION-BRADFORD-CLAY-ST. JOHNS-
GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COASTAL NASSAU-COASTAL DUVAL-
COFFEE-JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-
INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-
COASTAL CAMDEN-
435 AM EDT MON JUN 1 2015

...MODERATE RISK OF RIP CURRENTS...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA...
SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT...

A MODERATE RISK OF RIP CURRENTS CONTINUES TODAY.

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS
AFTERNOON AND EVENING.  ISOLATED STRONG TO SEVERE STORMS WILL BE
POSSIBLE CAPABLE OF PRODUCING STRONG GUSTY WINDS...HAIL...LOCALLY
HEAVY RAINFALL AND FREQUENT LIGHTNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

SCATTERED TO NUMEROUS MAINLY AFTERNOON AND EVENING THUNDERSTORMS ARE
EXPECTED EACH DAY. A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE
CAPABLE OF PRODUCING STRONG GUSTY WINDS...HAIL...LOCALLY HEAVY
RAINFALL AND FREQUENT LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.

In the hours before

Special weather statement, Jun 1, 1:38 PM EDT, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
138 PM EDT MON JUN 1 2015

FLZ040-011830-
MARION FL-
138 PM EDT MON JUN 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MARION COUNTY UNTIL
230 PM EDT...

AT 137 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
JUNIPER SPRINGS...MOVING SOUTH AT 10 MPH.

HAIL UP TO NICKEL SIZE IN DIAMETER AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

LOCATIONS IMPACTED INCLUDE...
JUNIPER SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 2931 8182 2929 8165 2928 8164 2905 8164
      2905 8166 2896 8166 2896 8186
TIME...MOT...LOC 1737Z 008DEG 7KT 2913 8169

ALLEN
Special weather statement, Jun 1, 1:57 PM EDT, 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
157 PM EDT MON JUN 1 2015

FLZ033-011845-
ST. JOHNS FL-
157 PM EDT MON JUN 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ST. JOHNS COUNTY
UNTIL 245 PM EDT...

AT 157 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
HASTINGS...MOVING NORTH AT 10 MPH.

HAIL UP TO NICKEL SIZE IN DIAMETER AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

LOCATIONS IMPACTED INCLUDE...
SAINT AUGUSTINE...HASTINGS...SAINT AUGUSTINE SOUTH...SAINT AUGUSTINE
SHORES...ELKTON...BAKERSVILLE...ANASTASIA AND SPUDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 2984 8130 2987 8131 2986 8131 2983 8132
      2983 8131 2964 8140 2967 8152 2976 8153
      2980 8157 2984 8158 2996 8157 2990 8131
      2988 8131 2989 8130 2990 8130 2989 8127
TIME...MOT...LOC 1757Z 194DEG 8KT 2974 8149

ALLEN
Special weather statement, Jun 1, 2:12 PM EDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
212 PM EDT MON JUN 1 2015

FLZ038-011900-
FLAGLER FL-
212 PM EDT MON JUN 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR FLAGLER COUNTY UNTIL 300 PM
EDT...

AT 212 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9
MILES NORTHEAST OF PIERSON...MOVING NORTHEAST AT 10 MPH.

HAIL UP TO NICKEL SIZE IN DIAMETER AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

LOCATIONS IMPACTED INCLUDE...
PALM COAST...BUNNELL...ANDALUSIA AND ESPANOLA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 2926 8123 2926 8139 2930 8142 2940 8142
      2939 8146 2940 8148 2945 8149 2949 8152
      2957 8152 2962 8143 2956 8126 2937 8115
      2928 8115
TIME...MOT...LOC 1812Z 231DEG 10KT 2935 8136

STRUBLE

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 8:03 PM EDTAreal Flood AdvisoryJAXColumbia, Gilchrist87 min
May 31, 8:18 PM EDTAreal Flood AdvisoryJAXColumbia, Hamilton87 min
Jun 1, 1:38 PM EDTSpecial Weather StatementJAXMarion52 min
Jun 1, 1:57 PM EDTSpecial Weather StatementJAXSaint Johns48 min
Jun 1, 2:12 PM EDTSpecial Weather StatementJAXFlagler48 min
Jun 1, 2:27 PM EDTSevere Thunderstorm WarningJAXFlagler48 min
Jun 1, 2:38 PM EDTTornado WarningJAXFlagler, Saint Johns21 min
Jun 1, 3:01 PM EDTSevere Thunderstorm WarningJAXFlagler14 min
Jun 1, 3:26 PM EDTSpecial Weather StatementJAXMarion34 min
Jun 1, 4:00 PM EDTSpecial Weather StatementJAXGilchrist30 min
Jun 1, 4:01 PM EDTSpecial Weather StatementJAXColumbia, Suwannee29 min
Jun 1, 4:11 PM EDTSpecial Weather StatementJAXPutnam49 min
Jun 1, 4:12 PM EDTSpecial Weather StatementJAXNassau48 min
Jun 1, 4:22 PM EDTSpecial Weather StatementJAXMarion23 min
Jun 1, 4:29 PM EDTSpecial Weather StatementJAXBradford31 min
Jun 1, 4:42 PM EDTSpecial Weather StatementJAXAlachua48 min
Jun 1, 4:47 PM EDTSpecial Weather StatementJAXBaker28 min
Jun 1, 4:58 PM EDTSevere Thunderstorm WarningJAXAlachua32 min
Jun 1, 5:16 PM EDTSevere Thunderstorm WarningJAXAlachua, Bradford, Union29 min
Jun 1, 5:31 PM EDTSpecial Weather StatementJAXUnion29 min
Jun 1, 5:34 PM EDTAreal Flood AdvisoryJAXAlachua, Bradford, Marion, Union86 min
Jun 1, 6:36 PM EDTSevere Thunderstorm WarningJAXBaker, Nassau39 min
Jun 1, 7:15 PM EDTSpecial Weather StatementJAXPutnam30 min
Jun 1, 7:16 PM EDTSpecial Weather StatementJAXDuval29 min
Jun 1, 7:55 PM EDTSpecial Weather StatementJAXGilchrist35 min
Jun 1, 2:43 PM EDTSpecial Weather StatementJAXAppling47 min
Jun 1, 5:21 PM EDTSevere Thunderstorm WarningJAXWare24 min
Jun 1, 5:41 PM EDTSpecial Weather StatementJAXWare49 min
Jun 1, 5:46 PM EDTSpecial Weather StatementJAXWare44 min
Jun 1, 5:49 PM EDTSpecial Weather StatementJAXCoffee41 min
Jun 1, 6:09 PM EDTSpecial Weather StatementJAXCharlton51 min
Jun 1, 6:12 PM EDTSevere Thunderstorm WarningJAXCoffee48 min
Jun 1, 6:26 PM EDTSpecial Weather StatementJAXJeff Davis49 min

Nearby

Severe Thunderstorm Warnings in Florida, 2015Every severe thunderstorm warning in 2015

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.