Alert archive / Florida / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 44, NWS Miami, FL

May 30, 2009Hendry County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 30, 2009, 3:05 PM EDT for Hendry County, Florida. It was in force for 40 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
May 30, 2009, 3:05 PM EDT (19:05 UTC)
Expired
May 30, 2009, 3:45 PM EDT
In force
40 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Hendry County, FL

The radar

The Miami radar (KAMX), 129 km from the middle of the area, began a volume at 19:06 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, 7.1 hours before the alert went out and 223 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 2009-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1217 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 2009-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.193958Sfc1 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
1217 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
680 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 1:26 AM EDTSpecial Weather StatementMFLMiami-Dade49 min
May 30, 10:00 AM EDTSpecial Weather StatementMFLMonroe45 min
May 30, 11:03 AM EDTSpecial Marine WarningMFL87 min
May 30, 11:06 AM EDTSpecial Weather StatementMFLBroward24 min
May 30, 11:35 AM EDTSpecial Marine WarningMFL55 min
May 30, 11:39 AM EDTSpecial Weather StatementMFLBroward51 min
May 30, 1:35 PM EDTSpecial Marine WarningMFL55 min
May 30, 2:03 PM EDTSpecial Weather StatementMFLPalm Beach42 min
May 30, 2:09 PM EDTSpecial Weather StatementMFLGlades51 min
May 30, 2:22 PM EDTSpecial Marine WarningMFL53 min
May 30, 2:52 PM EDTSpecial Weather StatementMFLPalm Beach53 min
May 30, 2:58 PM EDTSpecial Weather StatementMFLHendry47 min
May 30, 3:16 PM EDTSpecial Marine WarningMFL29 min
May 30, 3:55 PM EDTSpecial Marine WarningMFL65 min
May 30, 6:52 PM EDTSpecial Weather StatementMFLBroward23 min

Nearby

Severe Thunderstorm Warnings in Florida, 2009Every severe thunderstorm warning in 2009

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.