Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 70, NWS Melbourne, FL

September 22, 2016Martin County, Saint Lucie County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Sep 22, 2016, 3:56 PM EDT for Martin County, Saint Lucie County, Florida. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 22, 2016, 3:56 PM EDT (19:56 UTC)
Expired
Sep 22, 2016, 4:22 PM EDT
In force
26 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Martin County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 98 km from the middle of the area, began a volume at 20:00 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, 7.9 hours before the alert went out and 137 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 2016-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 619 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2016-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
619 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1110 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

593 
WUUS52 KMLB 221956
SVRMLB
FLC085-111-222045-
/O.NEW.KMLB.SV.W.0070.160922T1956Z-160922T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
356 PM EDT THU SEP 22 2016

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN ST. LUCIE COUNTY IN EAST CENTRAL FLORIDA...
  NORTHWESTERN MARTIN COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 445 PM EDT

* AT 356 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  TRADITION...OR 7 MILES WEST OF PORT SAINT LUCIE...AND IS NEARLY
  STATIONARY.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  TRADITION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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

&&

LAT...LON 2729 8061 2733 8042 2719 8033 2711 8056
TIME...MOT...LOC 1956Z 334DEG 1KT 2725 8047 

HAIL...0.75IN
WIND...60MPH
 
$$

WEITLICH
2 follow-up statements
972 
WWUS52 KMLB 222008
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
408 PM EDT THU SEP 22 2016

FLC085-111-222045-
/O.CON.KMLB.SV.W.0070.000000T0000Z-160922T2045Z/
ST. LUCIE FL-MARTIN FL-
408 PM EDT THU SEP 22 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHWESTERN ST. LUCIE AND NORTHWESTERN MARTIN COUNTIES...

AT 408 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
TRADITION...OR 7 MILES WEST OF PORT SAINT LUCIE...AND IS NEARLY
STATIONARY.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
TRADITION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

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

&&

LAT...LON 2729 8061 2733 8042 2719 8033 2711 8056
TIME...MOT...LOC 2008Z 334DEG 1KT 2725 8047 

HAIL...0.75IN
WIND...60MPH
 
$$

WEITLICH
644 
WWUS52 KMLB 222022
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
422 PM EDT THU SEP 22 2016

FLC085-111-222031-
/O.CAN.KMLB.SV.W.0070.000000T0000Z-160922T2045Z/
ST. LUCIE FL-MARTIN FL-
422 PM EDT THU SEP 22 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ST. LUCIE AND
NORTHWESTERN MARTIN COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING HAS BEEN CANCELLED.  HOWEVER STRONG GUSTY
WINDS...HEAVY RAIN AND FREQUENT LIGHTNING ARE STILL POSSIBLE WITH
THIS THUNDERSTORM.

LAT...LON 2729 8061 2733 8042 2719 8033 2711 8056
TIME...MOT...LOC 2019Z 334DEG 1KT 2725 8047 

$$

WEITLICH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 3:44 PM EDTSpecial Weather StatementMLBSaint Lucie46 min
Sep 22, 3:45 PM EDTAreal Flood AdvisoryMLBSaint Lucie90 min
Sep 22, 4:49 PM EDTAreal Flood AdvisoryMLBMartin, Saint Lucie86 min

Nearby

Severe Thunderstorm Warnings in Florida, 2016Every severe thunderstorm warning in 2016

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.