Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 185, NWS Jacksonville, FL

July 1, 2015Clay County, Putnam County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 1, 2015, 4:10 PM EDT for Clay County, Putnam County, Florida. It was in force for 35 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: Jul 1, 2015, 4:10 PM EDT (20:10 UTC)
Expired: Jul 1, 2015, 4:45 PM EDT
In force: 35 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Clay County, FL, Putnam County, FL

The radar

The Jacksonville radar (KJAX), 77 km from the middle of the area, began a volume at 20:09 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, 8.2 hours before the alert went out and 240 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: 2044 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1061 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 36 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 Jul 1, 2:00 PM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jul 1, 2:00 PM EDT, 2 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
200 PM EDT WED JUL 1 2015

.NEAR TERM /THRU THURSDAY/...

AS EXPECTED...AND MODEL GUIDANCE SUGGESTED...SO FAR PRECIP COVERAGE IS
CONSIDERABLY LESS THAN THIS TIME YESTERDAY...WITH APPARENT WEAK SUBSIDENCE
SUPPRESSING CUMULUS ACROSS SE/SCTRL GA. SCATTERED SHOWERS/T-STORMS CONFINED
TO THE FAR SOUTHERN PART OF OUR FORECAST AREA. MODEL GUIDANCE SUPPORTS
ONLY ISOLATED/WIDELY SCATTERED SHOWERS/T-STORMS AT BEST ELSEWHERE
ASSOCIATED WITH ADVANCING WEST COAST SEA BREEZE AND ANY OUTFLOW BOUNDARY
FROM MARION/PUTNAM CO. CONVECTION. EARLIER GUIDANCE SUGGESTED POTENTIAL FOR
SOME CONVECTION LATE IN THE DAY INTO THE EVENING OVER THE NORTHERNMOST
COUNTIES OF OUR FORECAST AREA THAT MAY COME IN FROM CTRL AL/WRN GA.
PRESENTLY NOT MUCH THERE...AND LATEST GUIDANCE KEEPS PRECIP FURTHER N.
WILL KEEP SLIGHT CHANCE POPS THROUGH THE EVENING ACROSS OUR NORTHERN COUNTIES
ACROSS SCTRL GA. EXPECT LOW TEMPS TONIGHT AROUND 70 OR LWR 70S INLAND...
LWR-MID 70S COAST.

WILL CONTINUE FORECAST OF CHANCE POPS FOR SCATTERED MAINLY AFTERNOON SHOWERS/
T-STORMS THURSDAY...ANTICIPATE GREATER COVERAGE SCTRL GA CLOSER TO
SHORTWAVES MOVING ACROSS GA/SC IN WRLY FLOW ALOFT. MOS GUIDANCE SUGGESTS
SIMILAR PATTERN WITH HIGHER POPS N THAN S...BUT NOT GOING YET WITH LIKELY
POPS N AS SUGGESTED BY MOS...WENT WITH 50 POP SCTRL GA PER CONSENSUS
GUIDANCE.  HIGH TEMPS EXPECTED TO BE LWR-MID 90S INLAND...AROUND 90 COAST.

.SHORT TERM...THU NIGHT THROUGH FRI NIGHT...

A WEAKENING MID LEVEL SHORT WAVE TROUGH PASSING OVERHEAD WILL BRING
A LOW CHANCE OF NOCTURNAL PRECIP THU NIGHT MAINLY ACROSS SE GA AND THE
SUWANNEE RIVER VALLEY UNDER PREVAILING LOW LEVEL WSW FLOW. FRI-FRI
NIGHT SURFACE AND MID LEVEL HIGH PRESSURE ACROSS S FL BEGINS TO NOSE
NORTHWARD ACROSS THE CENTRAL PENINSULA. WITH INCREASED SUBSIDENCE AND
DRIER MEAN LEVEL MOISTURE ADVERTISED LOWER RAIN CHANCES OF 30-35%. LIGHT
WSW STEERING FLOW WILL SUPPORT SHOWERS AND ISOLATED TSTORM ACTIVITY
MOVING SLOWLY INLAND FROM THE GULF COAST REGION DURING FRI MORNING WITH
ADDITIONAL BLOSSOMING OF PRECIP FARTHER INLAND AND EASTWARD INTO THE
AFTN. PRECIP WILL FADE INLAND WITH LOSS OF HEATING FRI NIGHT BY MIDNIGHT.
HIGH TEMPS WILL RISE ABOVE CLIMO INLAND INTO THE MID 90S TO NEAR 90
ALONG THE COAST WHERE THE EAST COAST SEA BREEZE WILL BE PINNED FRI AFTN.
LOWS WILL RANGE IN THE LOW/MID 70S WITH SOME PATCHY LATE NIGHT FOG POTENTIAL
ESPECIALLY FRI NIGHT UNDER INCREASED SUBSIDENCE.

.LONG TERM...SAT THROUGH WED...

SYNOPSIS...ABOVE NORMAL TEMPS AND NEAR CLIMO RAIN CHANCES UNDER A
DOMINANT SSW FLOW REGIME.

SAT-SUN...MEAN LAYER HIGH PRESSURE BUILDS NORTHWARD FROM SOUTH FL WITH
TROUGH AXIS REMAINING NORTH OF THE FORECAST AREA. THIS PATTERN SUPPORTS
BOTH SEA BREEZES MOVING INLAND UNDER LIGHT SSW STEERING FLOW WITH A
COLLISION FOCUSED INLAND DURING THE AFTN/EVENING. ADVERTISED NEAR CLIMO
DIURNAL RAIN CHANCES OF AROUND 40% INLAND. HIGHS WILL RISE ABOVE CLIMO
VALUES WITH STACKED RIDGING BUILDING OVER THE FL PENINSULA AND A WARM
SSW FLOW WITH UPPER 90S INLAND TO NEAR 90 COAST...WITH NEAR SEASONAL
LOWS IN THE LOW/MID 70S.

M0N-WED...GFS ENSEMBLE ADVERTISED THE MEAN RIDGE AXIS SHIFTING SOUTH
AS A TROUGH BEGINS TO CARVE OUT ALONG THE EASTERN CONUS EARLY NEXT
WEEK. ADVERTISED SLIGHTLY HIGHER RAIN CHANCES NEAR 40-50% GIVEN
THE PRESENCE OF FRONTAL FORCING INTERACTING WITH THE SEA BREEZES.
ADJUSTED TEMPS BACK TOWARD CLIMO GIVEN MORE CLOUD COVER WITH HIGHS
IN THE LOWER 90S AND MINS REMAINING IN THE LOW/MID 70S.

&&

.AVIATION...VFR CONDITIONS EXPECTED NEXT 24 HRS. ANTICIPATE
FAIRLY ISOLATED COVERAGE OF AFTERNOON SHRA/TSRA...SO JUST WENT
WITH VCTS FOR THE AFTERNOON HOURS IN TAFS. WITH EAST COAST SEA
BREEZE PINNED TO COASTLINE... SURFACE WINDS SHOULD REMAIN W TO SW
10-12 KTS WITH OCCASIONAL GUSTS NEAR 20KTS.

&&

.MARINE...OFFSHORE FLOW WILL PREVAIL AT NIGHT WITH SPEEDS OVER
THE OFFSHORE WATERS IN THE 15-20 KT RANGE AND SEAS UP TO 6 FT
POSSIBLE NEAR THE GULF STREAM. WILL RAISE AN EXERCISE CAUTION FOR
TONIGHT. NEAR SHORE SSW WINDS WILL PREVAIL 10-15 KTS WITH SEAS 3
FT OR LESS...BECOMING MORE SSE NEARSHORE IN THE AFTN WITH THE SEA
BREEZE.

RIP CURRENTS: LOW RISK TODAY AND THU.

&&

.FIRE WEATHER...ELEVATED DISPERSIONS TODAY AND THU GIVEN WARMER
TEMPS AND ELEVATED MIXING HEIGHTS.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  71  92  73  93 /  20  50  30  30
SSI  74  87  75  90 /  20  50  30  20
JAX  71  92  75  93 /  20  40  30  30
SGJ  73  88  75  90 /  20  40  20  30
GNV  70  93  72  93 /  20  40  20  30
OCF  72  93  73  93 /  20  30  20  30

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...NONE.
&&

WOLF/ENYEDI/WALSH

Hazardous weather outlook, Jul 1, 9:35 AM EDT, 6 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
935 AM EDT WED JUL 1 2015

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125-
GAZ132>136-149>154-162>166-021000-
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-
935 AM EDT WED JUL 1 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

LESSER COVERAGE OF THUNDERSTORMS IS EXPECTED TODAY COMPARED TO THE
PAST FEW DAYS. HOWEVER...A FEW THUNDERSTORMS ARE ANTICIPATED DURING
THE AFTERNOON AND EARLY EVENING HOURS...WITH THE BEST CHANCE BEING
ACROSS SOUTH-CENTRAL GEORGIA AND THE INTERIOR PART OF NORTHEAST
FLORIDA. THE STORMS MAY BE CAPABLE OF HEAVY DOWNPOURS...GUSTY WINDS
AND FREQUENT CLOUD-TO-GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

SCATTERED MAINLY AFTERNOON THUNDERSTORMS WILL BE POSSIBLE EACH
DAY. A FEW OF THE STORMS COULD PRODUCE GUSTY WINDS...FREQUENT
CLOUD TO GROUND LIGHTNING...AND HEAVY DOWNPOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

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

In the hours before

Local storm report, Jul 1, 12:03 PM EDT, 4 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1203 PM EDT WED JUL 01 2015

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

0312 PM     TSTM WND DMG     LAKE CITY               30.19N 82.64W
06/30/2015                   COLUMBIA           FL   911 CALL CENTER

            SEVERAL TREES DOWN IN THE LAKE CITY AREA.

&&

WALSH

Local storm report, Jul 1, 1:09 PM EDT, 3 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
109 PM EDT WED JUL 01 2015

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

0129 PM     TSTM WND DMG     2 SE LIVE OAK           30.27N 82.96W
06/30/2015                   SUWANNEE           FL   EMERGENCY MNGR

            TREE DOWN ACROSS ROAD ON 94TH STREET.

0211 PM     TSTM WND DMG     6 NNW LIVE OAK          30.37N 83.04W
06/30/2015                   SUWANNEE           FL   EMERGENCY MNGR

            LARGE TREE ON ROAD AT CR 249 AND 40TH STREET. TIME
            ESTIMATED BY RADAR.

0220 PM     TSTM WND DMG     3 E NEWBURN             30.28N 83.09W
06/30/2015                   SUWANNEE           FL   911 CALL CENTER

            DOWNED POWERLINES ON 169TH ROAD. TIME ESTIMATED BY RADAR.

0225 PM     TSTM WND DMG     4 WNW MCALPIN           30.17N 83.01W
06/30/2015                   SUWANNEE           FL   EMERGENCY MNGR

            TREE ACROSS ROAD ON 129TH ROAD. TIME ESTIMATED BY RADAR.

&&

WALSH

Local storm report, Jul 1, 1:21 PM EDT, 2 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
121 PM EDT WED JUL 01 2015

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

0903 PM     TSTM WND DMG     GAINESVILLE             29.67N 82.34W
06/30/2015                   ALACHUA            FL   EMERGENCY MNGR

            TWO TREES REPORTED DOWN IN THE CITY OF GAINESVILLE.

&&

WALSH

Local storm report, Jul 1, 1:36 PM EDT, 2 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
136 PM EDT WED JUL 01 2015

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

0234 PM     TSTM WND DMG     HOMELAND                30.85N 82.02W
06/30/2015                   CHARLTON           GA   911 CALL CENTER

            TREE DOWN. TIME ESTIMATED BY RADAR.

&&

WALSH

Special weather statement, Jul 1, 3:53 PM EDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
353 PM EDT WED JUL 1 2015

FLZ031-032-036-037-012045-
ALACHUA FL-BRADFORD FL-CLAY FL-PUTNAM FL-
353 PM EDT WED JUL 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PUTNAM...
SOUTHEASTERN BRADFORD...NORTHEASTERN ALACHUA AND SOUTHWESTERN CLAY
COUNTIES UNTIL 445 PM EDT...

AT 353 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ORANGE HEIGHTS...OR NEAR KEYSTONE HEIGHTS...MOVING NORTHEAST AT 30
MPH.

GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
WIND DAMAGE.

LOCATIONS IMPACTED INCLUDE...
KEYSTONE HEIGHTS...MIDDLEBURG...MELROSE...KINGSLEY...GEORGE'S LAKE...
LAKE GENEVA...CAMP BLANDING...ORANGE HEIGHTS...WALDO...PENNEY
FARMS...HAMPTON AND PUTNAM HALL.

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

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 2964 8211 2979 8225 3009 8191 2983 8171
TIME...MOT...LOC 1953Z 230DEG 26KT 2976 8211

ENYEDI

Local storm report, Jul 1, 4:07 PM EDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
407 PM EDT WED JUL 01 2015

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

0404 PM     TSTM WND GST     KEYSTONE HEIGHTS        29.78N 82.03W
07/01/2015  M48 MPH          CLAY               FL   AWOS

&&

AENYEDI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:20 PM EDT	Special Weather Statement	JAX	Gilchrist, Union	25 min
Jun 30, 9:03 PM EDT	Special Weather Statement	JAX	Putnam	27 min
Jul 1, 10:51 AM EDT	Special Weather Statement	JAX	Marion	54 min
Jul 1, 11:34 AM EDT	Special Weather Statement	JAX	Marion	56 min
Jul 1, 3:53 PM EDT	Special Weather Statement	JAX	Clay	52 min
Jul 1, 6:15 PM EDT	Special Weather Statement	JAX	Hamilton	30 min
Jul 1, 6:46 PM EDT	Special Weather Statement	JAX	Hamilton	44 min
Jul 1, 6:55 PM EDT	Severe Thunderstorm Warning	JAX	Echols	35 min
Jul 1, 7:29 PM EDT	Special Weather Statement	JAX	Clinch	16 min
Jul 1, 7:45 PM EDT	Special Weather Statement	JAX	Clinch	15 min

Nearby

Severe Thunderstorm Warnings in Florida, 2015 Every 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.