Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 2, NWS Melbourne, FL

March 26, 2015Saint Lucie County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Mar 26, 2015, 4:15 PM EDT for Saint Lucie County, Florida. It was in force for 30 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 26, 2015, 4:15 PM EDT (20:15 UTC)
Expired
Mar 26, 2015, 4:45 PM EDT
In force
30 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon

County Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 86 km from the middle of the area, began a volume at 20:17 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.

What was reported inside it

TimeReportWhereRemark
Mar 26, 4:20 PM EDTTSTM WND DMG4 S Fort Pierce, FLWPTV REPORTED TREE DOWN ON HOUSE IN THE WHISPERING PINES SUBDIVISION. PEOPLE TRAPPED INSIDE THE HOUSE.
Mar 26, 4:23 PM EDTTSTM WND DMGFort Pierce, FLNUMEROUS TREES AND BRANCHES DOWN IN THE 300 BLOCK OF EAST WEATHERBEE ROAD AND 300 BLOCK OF TUMBLIN KLING ROAD. TREE ON A HOME AND ON A CARPORT.
Mar 26, 4:23 PM EDTHAIL 1.25Fort Pierce, FLHAIL UP TO A HALF DOLLAR REPORTED NEAR U.S. 1 BETWEEN WEATHERBEE AND TUMBLIN KLING ROADS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.3 hours before the alert went out and 120 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 2015-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 656 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, Cape Canaveral, FL at 12:00Z on 2015-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
656 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
773 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

605 
WUUS52 KMLB 262015
SVRMLB
FLC111-262045-
/O.NEW.KMLB.SV.W.0002.150326T2015Z-150326T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
415 PM EDT THU MAR 26 2015

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ST. LUCIE COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 445 PM EDT

* AT 415 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED OVER WHITE CITY...AND MOVING
  NORTH AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PORT SAINT LUCIE...WALTON...FORT PIERCE...SAINT LUCIE NUCLEAR POWER
  PLANT AND INDRIO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 2727 8043 2756 8039 2755 8035 2748 8033
      2750 8032 2756 8033 2756 8032 2740 8026
      2746 8032 2744 8032 2734 8026 2739 8026
      2732 8023 2732 8027 2729 8023 2728 8022
      2728 8032
TIME...MOT...LOC 2015Z 185DEG 29KT 2739 8033 

$$

CRISTALDI
1 follow-up statement
231 
WWUS52 KMLB 262036
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
436 PM EDT THU MAR 26 2015

FLC111-262045-
/O.EXP.KMLB.SV.W.0002.000000T0000Z-150326T2045Z/
ST. LUCIE FL-
436 PM EDT THU MAR 26 2015

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ST. LUCIE COUNTY WILL
EXPIRE AT 445 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 2727 8043 2756 8039 2755 8035 2748 8033
      2750 8032 2756 8033 2756 8032 2740 8026
      2746 8032 2744 8032 2734 8026 2739 8026
      2732 8023 2732 8027 2729 8023 2728 8022
      2728 8032
TIME...MOT...LOC 2031Z 185DEG 29KT 2739 8033 

$$

CRISTALDI

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 3:46 PM EDTSpecial Weather StatementMLBIndian River59 min
Mar 26, 3:47 PM EDTSpecial Weather StatementMLBVolusia28 min
Mar 26, 3:49 PM EDTSpecial Weather StatementMLBMartin56 min
Mar 26, 3:53 PM EDTSpecial Marine WarningMLB82 min
Mar 26, 4:07 PM EDTSpecial Marine WarningMLB83 min
Mar 26, 4:25 PM EDTSevere Thunderstorm WarningMLBBrevard, Indian River39 min
Mar 26, 4:30 PM EDTSpecial Marine WarningMLB2 hr
Mar 26, 4:44 PM EDTSpecial Weather StatementMLBIndian River, Martin, Saint Lucie91 min
Mar 26, 5:11 PM EDTSpecial Marine WarningMLB64 min
Mar 26, 5:17 PM EDTSpecial Weather StatementMLBBrevard43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.