Alert archive / Florida / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 1, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 1, 1988, 11:15 AM EDT for Monroe County, Florida. It was in force for 55 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 1, 1988, 11:15 AM EDT (15:15 UTC)
- Expired
- May 1, 1988, 12:10 PM EDT
- In force
- 55 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Monroe County, FL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 1, 11:37 AM EDT | Thunderstorm Wind 59 | Monroe, FL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Key West, FL (KEYW), launched 12:00Z, 3.3 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.
- Mixed-layer CAPE
- 609 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 896 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.3
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, May 1, 8:41 AM EDT, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 830 AM EDT SUN MAY 1 1988 AT 830 AM A LARGE CLUSTER OF STRONG THUNDERSTORMS...ATTENDED BY VERY HEAVY RAINFALL...STRONG GUSTY WINDS...AND FREQUENT LIGHTNING... EXTENDED FROM WESTERN AND SOUTHEAST DADE COUNTY TO THE UPPER KEYS AND JUST OFFSHORE ALONG THE FLORIDA STRAITS. RESIDENTS AND BOATERS SHOULD BE AWARE OF THESE THUNDERSTORMS AS THEY MOVE THROUGH THE AREA AND OFFSHORE DURING THE NEXT ONE TO TWO HOURS. MOVEMENT WAS TO THE NORTHEAST AT 25 MILES AN HOUR. LARGE AREAS OF RAIN WITH ISOLATED THUNDERSTORMS...SOME WITH VERY RAINFALL COVERED MOST OF THE SOUTH FLORIDA PENINSULA SOUTH OF A NAPLES/JUPITER LINE. THIS AREA #EXTENDED SOUTH TO THE FLORIDA KEYS AND THE ADJACENT GULF AND ATLANTIC WATERS.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 11:23 AM EDT | Severe Thunderstorm Warning | MFL | Monroe | 67 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1988Every severe thunderstorm warning in 1988
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.