Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 16, NWS Tampa Bay, FL

April 15, 2014Citrus County, Sumter County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 15, 2014, 12:25 PM EDT for Citrus County, Sumter County, Florida. It was in force for 50 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
Apr 15, 2014, 12:25 PM EDT (16:25 UTC)
Expired
Apr 15, 2014, 1:15 PM EDT
In force
50 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

Counties Citrus County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 120 km from the middle of the area, began a volume at 16:29 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 4.4 hours before the alert went out and 179 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, Cape Canaveral, FL at 12:00Z on 2014-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Cape Canaveral, FL at 12:00Z on 2014-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1017 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 15, 10:34 AM EDT, 1 hour 51 minutes earlier.

Area forecast discussion, Apr 15, 10:34 AM EDT, 1 hour 51 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
1034 AM EDT TUE APR 15 2014

.UPDATE...UPPER LONGWAVE TROUGH SWINGING THROUGH THE MISSISSIPPI
VALLEY THIS MORNING PUSHING VORT MAX AND JET STREAK THROUGH THE NE
GULF AND DEEP SOUTH. PRE FRONTAL LINE OF CONVECTION MOVING
THROUGH THE FL BIG BEND EXTENDING INTO THE CENTRAL GULF WITH SOME
DISCRETE CELLS MOVING INTO THE NORTHERN NATURE COAST AT THIS
TIME. CONTINUE TO EXPECT SOME STRONG TO POSSIBLY SEVERE STORMS TO
MOVE THROUGH THE N FL PENINSULA LATER THIS MORNING INTO THE EARLY
AFTERNOON THEN INTO THE TAMPA BAY AREA MID DAY. DAMAGING WIND
GUSTS THE PRIMARY THREAT WITH THE STRONGEST CELLS THROUGH THE DAY
AND WILL CONTINUE TO CLOSELY MONITOR RADAR TRENDS. BREEZY
S-SWERLY WINDS AHEAD OF COLD FRONT OVER ALL AREAS TO KEEP LAKE
WIND ADVISORY ONGOING AND CHOPPY SMALL SURF ALONG AREA BEACHES FOR
MODERATE RIP CURRENT RISK THIS AFTERNOON. LATEST GRIDS AND
FORECASTS CLOSE ONLY MINOR COSMETIC AND TIMING ADJUSTMENTS
NEEDED.

&&

.AVIATION...MORNING LOW CLOUDS HAVE BURNED OFF WITH VFR CU FIELD
TO DEV IN THE HEATING OF THE DAY. LINE OF SHOWERS WITH EMBEDDED
TSRA TO MOVE THROUGH THE AREA N TO S WITH LCL IFR CIGS/VSBY IN
AND NR CONVECTION. STRONG AND GUSTY S-SW SFC WINDS AHEAD OF THE
CONVECTION THEN GUSTY AND ERRATIC WINDS IN STORMS THEN WINDS
VEERING NW BEHIND TO STORMS THROUGH LATE THIS AFTERNOON/EARLY EVENING.

&&

.MARINE...BREEZY SOUTH WINDS TO VEER SW THROUGH THE DAY AHEAD OF
LINE OF STORMS THEN SWITCH NW-N LATE IN THE AFTERNOON AND EVENING.
SEAS TO INCREASE IN RESPONSE TO WINDS. LATEST NEAR SHORE AND
OFFSHORE BUOY OBS SHOWING WINDS 20-25 KTS AND GUSTY FROM SARASOTA BAY
NORTHWARD AND SEAS BUILDING 3-5 FT NOW TO 4-7 FT BY TONIGHT TO
KEEP SCA FLYING NORTHERN WATERS AND TAMPA BAY AND SCEC SOUTHERN
WATERS AT THIS TIME.

&&

.PRELIMINARY POINT TEMPS/POPS...
TPA  83  56  75  65 /  90  10  10  20
FMY  86  64  80  67 /  60  20  20  20
GIF  86  58  76  65 /  80  10  20  20
SRQ  81  55  78  65 /  80  10  10  20
BKV  81  51  77  58 /  90  10  10  20
SPG  80  62  76  67 /  90  10  10  20

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...RIP CURRENT RISK THROUGH THIS EVENING FOR COASTAL
     CHARLOTTE-COASTAL HILLSBOROUGH-COASTAL LEE-COASTAL
     MANATEE-COASTAL SARASOTA-PINELLAS.

     LAKE WIND ADVISORY UNTIL 8 PM EDT THIS EVENING FOR COASTAL
     CHARLOTTE-COASTAL CITRUS-COASTAL HERNANDO-COASTAL
     HILLSBOROUGH-COASTAL LEE-COASTAL LEVY-COASTAL MANATEE-
     COASTAL PASCO-COASTAL SARASOTA-DESOTO-HARDEE-
     HIGHLANDS-INLAND CHARLOTTE-INLAND CITRUS-INLAND
     HERNANDO-INLAND HILLSBOROUGH-INLAND LEE-INLAND LEVY-
     INLAND MANATEE-INLAND PASCO-INLAND SARASOTA-PINELLAS-
     POLK-SUMTER.

GULF WATERS...SMALL CRAFT ADVISORY UNTIL 11 AM EDT WEDNESDAY FOR
     ENGLEWOOD TO TARPON SPRINGS OUT 20 NM-ENGLEWOOD TO
     TARPON SPRINGS OUT 20 TO 60 NM-TAMPA BAY WATERS-
     TARPON SPRINGS TO SUWANNEE RIVER OUT 20 NM-TARPON
     SPRINGS TO SUWANNEE RIVER OUT 20 TO 60 NM.

     SMALL CRAFT ADVISORY FROM 8 PM THIS EVENING TO 11 AM EDT
     WEDNESDAY FOR BONITA BEACH TO ENGLEWOOD OUT 20 NM-
     BONITA BEACH TO ENGLEWOOD OUT 20 TO 60 NM-CHARLOTTE
     HARBOR AND PINE ISLAND SOUND.

&&

UPDATE/MARINE/AVIATION...25/DAVIS
Hazardous weather outlook, Apr 15, 5:27 AM EDT, 6 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
527 AM EDT TUE APR 15 2014

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-GMZ830-836-850-853-856-870-
873-876-161000-
SUMTER-PINELLAS-POLK-HARDEE-HIGHLANDS-DESOTO-COASTAL LEVY-
COASTAL CITRUS-COASTAL HERNANDO-COASTAL PASCO-
COASTAL HILLSBOROUGH-COASTAL MANATEE-COASTAL SARASOTA-
COASTAL CHARLOTTE-COASTAL LEE-INLAND LEVY-INLAND CITRUS-
INLAND HERNANDO-INLAND PASCO-INLAND HILLSBOROUGH-INLAND MANATEE-
INLAND SARASOTA-INLAND CHARLOTTE-INLAND LEE-TAMPA BAY WATERS-
CHARLOTTE HARBOR AND PINE ISLAND SOUND-
TARPON SPRINGS TO SUWANNEE RIVER OUT 20 NM-
ENGLEWOOD TO TARPON SPRINGS OUT 20 NM-
BONITA BEACH TO ENGLEWOOD OUT 20 NM-
TARPON SPRINGS TO SUWANNEE RIVER OUT 20 TO 60 NM-
ENGLEWOOD TO TARPON SPRINGS OUT 20 TO 60 NM-
BONITA BEACH TO ENGLEWOOD OUT 20 TO 60 NM-
527 AM EDT TUE APR 15 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST
FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
THUNDERSTORMS ARE EXPECTED TO DEVELOP TODAY AND SOME OF THESE
STORMS COULD BE STRONG TO SEVERE...PRIMARILY NORTH OF INTERSTATE
4. THE STRONGEST THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE OF
PRODUCING STRONG GUSTY WINDS...ISOLATED TORNADOES...LOCALLY HEAVY
RAINS...AND FREQUENT LIGHTNING STRIKES.

...LAKE WIND IMPACT...
STRONG GUSTY WINDS ARE EXPECTED TO DEVELOP ON AREA LAKES TODAY IN
ADVANCE OF AN APPROACHING COLD FRONT. FOR ADDITIONAL DETAILS SEE
THE LATEST NON PRECIPITATION STATEMENT.

...RIP CURRENT IMPACT...
BUILDING WAVES AND ONSHORE WINDS WILL RESULT IN AN ELEVATED RISK
FOR RIP CURRENTS AT AREA BEACHES THROUGH THIS EVENING.

...MARINE IMPACTS...
WIND SPEEDS OF 20 TO 33 KNOTS WILL CREATE HAZARDOUS BOATING
CONDITIONS FOR SMALL CRAFT OPERATORS TODAY AND TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

...THUNDERSTORM IMPACT...
THURSDAY NIGHT THROUGH FRIDAY NIGHT THUNDERSTORMS ARE EXPECTED AS
A FRONT STALLS ACROSS CENTRAL FLORIDA. SOME OF THESE STORMS COULD
BE STRONG TO SEVERE AND CAPABLE OF PRODUCING STRONG GUSTY
WINDS...ISOLATED TORNADOES...LOCALLY HEAVY RAINS...AND FREQUENT
LIGHTNING STRIKES.

...MARINE IMPACTS...
WEDNESDAY MORNING AND AGAIN WEDNESDAY NIGHT...WIND SPEEDS OF 20
TO 33 KNOTS WILL CREATE HAZARDOUS BOATING CONDITIONS FOR SMALL
CRAFT OPERATORS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD MONITOR THE WEATHER AND SELF ACTIVATE IF NEEDED.

JELSEMA

In the hours before

Local storm report, Apr 15, 11:46 AM EDT, 39 minutes before
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Special weather statement, Apr 15, 11:59 AM EDT, 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1159 AM EDT TUE APR 15 2014

FLZ043-142-148-149-242-248-249-151700-
SUMTER-INLAND HERNANDO-INLAND CITRUS-COASTAL HERNANDO-COASTAL PASCO-
INLAND PASCO-COASTAL CITRUS-
1159 AM EDT TUE APR 15 2014

...STRONG THUNDERSTORMS WILL AFFECT EASTERN CITRUS...HERNANDO...
NORTHEASTERN PASCO AND SUMTER COUNTIES...

AT 1157 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF THUNDERSTORMS LOCATED ALONG A LINE EXTENDING FROM RIVER LAKES
MANOR TO HEATHERWOOD TO HERNANDO BEACH...OR ALONG A LINE EXTENDING
FROM 7 MILES NORTH OF INVERNESS TO 7 MILES SOUTH OF INVERNESS TO 7
MILES NORTHWEST OF SPRING HILL...MOVING EAST AT 35 MPH...AND WILL
AFFECT STOKES FERRY...RIVER LAKES MANOR...ARBOR LAKES AND
INVERNESS.  THESE STORMS ARE CAPABLE OF PRODUCING WIND GUSTS OF 40
TO 50 MPH AND VERY HEAVY RAIN THROUGH 100 PM EDT.

&&

LAT...LON 2849 8268 2850 8269 2854 8266 2855 8267
      2877 8251 2901 8237 2896 8230 2896 8196
      2896 8195 2843 8195 2843 8268 2846 8270
TIME...MOT...LOC 1557Z 270DEG 29KT 2895 8227 2875 8232
          2850 8259
Special weather statement, Apr 15, 12:06 PM EDT, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
1206 PM EDT TUE APR 15 2014

FLZ050-149-151-249-251-151700-
PINELLAS-COASTAL HILLSBOROUGH-INLAND HILLSBOROUGH-COASTAL PASCO-
INLAND PASCO-
1206 PM EDT TUE APR 15 2014

...STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN HILLSBOROUGH...
PINELLAS AND SOUTHWESTERN PASCO COUNTIES...

AT 1205 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
THUNDERSTORMS LOCATED 3 MILES SOUTHWEST OF INDIAN SHORES...OR 6 MILES
WEST OF SEMINOLE...MOVING NORTHEAST AT 30 MPH...WILL AFFECT MADEIRA
BEACH...INDIAN SHORES...SEMINOLE AND BELLEAIR BEACH...UNTIL 100 PM
EDT.

GUSTY WINDS 35 TO 45 MPH WILL OCCUR. WHEN DRIVING THROUGH HEAVY
RAIN...SLOW DOWN. ALWAYS LEAVE A SAFE DISTANCE BETWEEN YOU AND OTHER
VEHICLES.

&&

LAT...LON 2809 8283 2807 8279 2818 8282 2829 8274
      2799 8242 2792 8254 2797 8259 2796 8266
      2798 8261 2800 8267 2796 8267 2794 8271
      2792 8264 2788 8261 2778 8279 2786 8286
      2790 8286
TIME...MOT...LOC 1605Z 230DEG 28KT 2788 8286

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 4:53 AM EDTSmall Craft AdvisoryTBW53 hr
Apr 15, 5:10 AM EDTRip Current StatementTBWCharlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota23 hr
Apr 15, 5:15 AM EDTLake Wind AdvisoryTBWCharlotte, Citrus, DeSoto, Hardee, Hernando, Highlands and 9 more15 hr
Apr 15, 11:43 AM EDTSpecial Marine WarningTBW62 min
Apr 15, 11:59 AM EDTSpecial Weather StatementTBWHernando, Sumter61 min
Apr 15, 12:06 PM EDTSpecial Weather StatementTBWPinellas54 min
Apr 15, 12:53 PM EDTSpecial Weather StatementTBWSumter52 min
Apr 15, 12:55 PM EDTSpecial Marine WarningTBW50 min
Apr 15, 1:00 PM EDTSpecial Weather StatementTBWHillsborough60 min
Apr 15, 1:14 PM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Polk46 min
Apr 15, 2:03 PM EDTSpecial Weather StatementTBWHillsborough57 min
Apr 15, 3:21 PM EDTSpecial Weather StatementTBWPolk39 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014

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.