Alert archive / Florida / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 3, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jan 3, 1999, 1:28 AM EST for Collier County, Florida. It was in force for 47 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jan 3, 1999, 1:28 AM EST (06:28 UTC)
- Expired
- Jan 3, 1999, 2:15 AM EST
- In force
- 47 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Collier County, FL
The radar
The Miami radar (KAMX), 137 km from the middle of the area, began a volume at 06:27 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 3, 1:29 AM EST | Thunderstorm Wind 70 | Marco, FL | A severe thunderstorm wind gust blew down a two story screened pool enclosure. |
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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 3, 12:45 AM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 6.5 hours before the alert went out and 140 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
- 1088 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
999
WUUS1 KMIA 030629 RRA
SVRMIA
FLC021-030715-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
128 AM EST SUN JAN 3 1999
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN COLLIER COUNTY IN FLORIDA
INCLUDING WEAVERS STATION...ROYAL PALM HAMMOCK...ROCK ISLAND...
NAPLES...MILES CITY...MARCO...JEROME...GOLDEN GATE ESTATES...
EAST NAPLES...DEEP LAKE...COPELAND AND CARNESTOWN
* UNTIL 215 AM EST
* AT 127 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER EAST NAPLES...MOVING EAST AT 40 MILES
PER HOUR.
* OTHER LOCATIONS IN THE WARNING INCLUDE NORTH NAPLES...NAPLES
PARK...NAPLES MANOR...IMMOKALEE AND GOLDEN GATE
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 AM EDT FOR FLORIDA.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN MIAMI.
LAT...LON 2632 8192 2579 8175 2588 8131 2647 8129What 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, Jan 2, 10:00 PM EST, 3 hours 28 minutes before
AMZ610-630-631-650>654-656-670>676-FLZ063-066>078-031100- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 1000 PM EST SAT JAN 2 1999 A LINE OF STRONG THUNDERSTORMS WILL MOVE RAPIDLY EAST ACROSS THE EASTERN GULF OF MEXICO TONIGHT. THIS LINE WILL MOVE INTO GLADES... HENDRY...AND COLLIER COUNTIES AFTER 100 AM SUNDAY MORNING. THE MAIN THREAT FROM THESE STORMS WILL BE STRONG WIND GUSTS AND DEADLY LIGHTNING. SOME OF THESE STORMS MAY REACH SEVERE LIMITS DURING THE EARLY MORNING HOURS AND ISOLATED TORNADOES ARE POSSIBLE. THESE STORMS WILL PROGRESS EAST ACROSS THE AREA REACHING THE FLORIDA KEYS AND WESTERN SECTIONS OF DADE...BROWARD AND PALM BEACH COUNTIES AFTER 200 AM AND THE METROPOLITAN AREAS AFTER 300 AM. ALTHOUGH STORMS MAY BEGIN TO WEAKEN AS THIS LINE MOVES EASTWARD...RESIDENTS SHOULD REMAIN ALERT TO THE POTENTIAL FOR SEVERE WEATHER OVERNIGHT TONIGHT AND BE PREPARED TO TAKE IMMEDIATE ACTION IF A WARNING IS ISSUED. THOSE WHO OWN NOAA WEATHER RADIOS WITH THE TONE ALERT FEATURE SHOULD MAKE SURE THE ALERT IS SET TO ON BEFORE GOING TO BED TONIGHT. STORM SPOTTER ACTIVATION IS REQUESTED AT THIS TIME. ALSO...FLOOD WATERS IN NORTHEASTERN PALM BEACH COUNTY ARE RECEDING AND MINIMAL RAINFALL AMOUNTS OF AROUND ONE QUARTER OF AN INCH ARE EXPECTED UNTIL THE SQUALL LINE ARRIVES. THE FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 1005 PM. HOWEVER...LOCAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE WITH THUNDERSTORMS SUNDAY MORNING AND RESIDENTS SHOULD BE ALERT FOR ADDITIONAL FLOODING SHOULD THIS OCCUR. CARROLL
Special weather statement, Jan 2, 10:00 PM EST, 3 hours 28 minutes before
AMZ610-630-631-650>654-656-670>676-FLZ063-066>078-031100- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 1000 PM EST SAT JAN 2 1999 A LINE OF STRONG THUNDERSTORMS WILL MOVE RAPIDLY EAST ACROSS THE EASTERN GULF OF MEXICO TONIGHT. THIS LINE WILL MOVE INTO GLADES... HENDRY...AND COLLIER COUNTIES AFTER 100 AM SUNDAY MORNING. THE MAIN THREAT FROM THESE STORMS WILL BE STRONG WIND GUSTS AND DEADLY LIGHTNING. SOME OF THESE STORMS MAY REACH SEVERE LIMITS DURING THE EARLY MORNING HOURS AND ISOLATED TORNADOES ARE POSSIBLE. THESE STORMS WILL PROGRESS EAST ACROSS THE AREA REACHING THE FLORIDA KEYS AND WESTERN SECTIONS OF DADE...BROWARD AND PALM BEACH COUNTIES AFTER 200 AM AND THE METROPOLITAN AREAS AFTER 300 AM. ALTHOUGH STORMS MAY BEGIN TO WEAKEN AS THIS LINE MOVES EASTWARD...RESIDENTS SHOULD REMAIN ALERT TO THE POTENTIAL FOR SEVERE WEATHER OVERNIGHT TONIGHT AND BE PREPARED TO TAKE IMMEDIATE ACTION IF A WARNING IS ISSUED. THOSE WHO OWN NOAA WEATHER RADIOS WITH THE TONE ALERT FEATURE SHOULD MAKE SURE THE ALERT IS SET TO ON BEFORE GOING TO BED TONIGHT. STORM SPOTTER ACTIVATION IS REQUESTED AT THIS TIME. ALSO...FLOOD WATERS IN NORTHEASTERN PALM BEACH COUNTY ARE RECEDING AND MINIMAL RAINFALL AMOUNTS OF AROUND ONE QUARTER OF AN INCH ARE EXPECTED UNTIL THE SQUALL LINE ARRIVES. THE FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 1005 PM. HOWEVER...LOCAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE WITH THUNDERSTORMS SUNDAY MORNING AND RESIDENTS SHOULD BE ALERT FOR ADDITIONAL FLOODING SHOULD THIS OCCUR. CARROLL
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 3, 1:01 AM EST | Severe Thunderstorm Warning | MFL | Collier | 29 min |
| Jan 3, 1:07 AM EST | Severe Thunderstorm Warning | MFL | Glades | 38 min |
| Jan 3, 1:42 AM EST | Severe Thunderstorm Warning | MFL | Glades | 48 min |
| Jan 3, 2:14 AM EST | Severe Thunderstorm Warning | MFL | Collier, Hendry | 46 min |
| Jan 3, 2:37 AM EST | Severe Thunderstorm Warning | MFL | Monroe | 53 min |
| Jan 3, 3:00 AM EST | Severe Thunderstorm Warning | MFL | Broward, Collier, Hendry, Palm Beach | 45 min |
| Jan 3, 3:00 AM EST | Severe Thunderstorm Warning | MFL | Miami-Dade | 45 min |
| Jan 3, 3:40 AM EST | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade, Palm Beach | 40 min |
| Jan 3, 4:20 AM EST | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 40 min |
| Jan 3, 4:20 AM EST | Severe Thunderstorm Warning | MFL | Palm Beach | 40 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1999Every severe thunderstorm warning in 1999
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; radar from the NEXRAD Level II archive.