Alert archive / Florida / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 4, NWS Miami, FL

March 3, 1991Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 3, 1991, 5:31 PM EST for Miami-Dade County, Florida. It was in force for 59 min.

The area

The counties it named.

The facts

Issued: Mar 3, 1991, 5:31 PM EST (22:31 UTC)
Expired: Mar 3, 1991, 6:30 PM EST
In force: 59 min
Issued by: NWS Miami, FL
Area: Whole counties

County Miami-Dade County, FL

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 10.5 hours before the alert went out and 169 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 690 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 683 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.2

Open this sounding in Storm Lab

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.

In the hours before

Special weather statement, Mar 3, 2:19 PM EST, 3 hours 12 minutes before

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Local storm report, Mar 3, 3:59 PM EST, 1 hour 32 minutes before

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Local storm report, Mar 3, 4:40 PM EST, 51 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 3, 12:20 PM EST	Severe Thunderstorm Warning	MFL	Glades, Hendry	55 min
Mar 3, 12:20 PM EST	Severe Thunderstorm Warning	MFL	Collier	55 min
Mar 3, 1:14 PM EST	Severe Thunderstorm Warning	MFL	Glades, Hendry	61 min
Mar 3, 3:30 PM EST	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade	2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 1991 Every severe thunderstorm warning in 1991

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.