Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 70, NWS Melbourne, FL

June 30, 1994Marion County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 30, 1994, 2:43 PM EDT for Marion County, Florida. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1994, 2:43 PM EDT (18:43 UTC)
Expired
Jun 30, 1994, 3:45 PM EDT
In force
62 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Marion County, FL

The nearest sounding before it

Jacksonville, FL (KAYS), launched 12:00Z, 6.7 hours before the alert went out and 148 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, Jacksonville, FL at 12:00Z on 1994-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1640 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, Jacksonville, FL at 12:00Z on 1994-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1640 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
-45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Melbourne, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 2:20 PM EDT, 23 minutes earlier.

Area forecast discussion, Jun 30, 2:20 PM EDT, 23 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
220 PM EDT THU JUN 30 1994

WK MID/UPR TROF WL LIFT OUT TONITE BUT WKNESS IN RDG SHLD RMN OVR
CNTRL GLFMEX THRU FCST PD. NGM LWRS POPS ON FRI BASED ON ADVCTN OF
SLGTLY LWR MRH (SHOWN BY 12Z YNN SNDG). ETA KEEPS PW VALUES HI THRUT
PD. WITH STRENGTH OF SW ACYC...WL NOT FCST LWR MRH TO MAKE MUCH WWD
PROGRESS AND STAY WITH CURRENT GOOD CHC POPS FOR FRI AND CONT THEM
INTO SAT. PERSISTENT CNTRL FL SFC RDG FCST TO BROADEN...RSLTG IN MSTLY
S STEERING FLO...SO BEST CHC FOR GROUP 1 CNVCTN SHLD BE DAYTIME.

@1...BREVARD INDIAN RIVER ST LUCIE MARTIN VOLUSIA
@2...LAKE ORANGE SEMINOLE OSCEOLA OKEECHOBEE

MCO TT 071/091 072/091 3535
DAB TT 071/090 072/090 2535
MLB TT 075/089 075/090 2535

.MLB...NONE.

RL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 3:47 PM EDTSevere Thunderstorm WarningMLBMarion28 min
Jun 30, 4:47 PM EDTSevere Thunderstorm WarningMLBFlagler58 min

Nearby

Severe Thunderstorm Warnings in Florida, 1994Every severe thunderstorm warning in 1994

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.