Alert archive / Florida / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 18, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Feb 15, 1998, 8:27 PM EST for Glades County, Hendry County, Florida. It was in force for 63 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
- Feb 15, 1998, 8:27 PM EST (01:27 UTC)
- Expired
- Feb 15, 1998, 9:30 PM EST
- In force
- 63 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
Counties Glades County, FL, Hendry County, FL
The radar
The Miami radar (KAMX), 148 km from the middle of the area, began a volume at 01:31 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 15, 6:15 PM EST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 1.5 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
- 449 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 266 m²/s²
- 0-3 km storm-relative helicity
- 512 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
695 WUUS1 KMIA 160128 RRA SVRMIA FLC043-051-160230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 827 PM EST SUN FEB 15 1998 THE NATIONAL WEATHER SERVICE IN MIAMI FL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHERN FLORIDA ...HENDRY COUNTY ...SOUTHERN GLADES COUNTY AT 826 PM EST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM MOVING INTO WESTERN HENDRY COUNTY AND SOUTHERN GLADES COUNTY. THE STORMS ARE MOVING EAST AT 30 TO 40 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. SEEK SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.
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, Feb 15, 3:30 PM EST, 4 hours 57 minutes before
AMZ610-630-650>654-656-670>676-FLZ063-066>078-161200- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 330 PM EST SUN FEB 15 1998 ...GALE WARNING SURROUNDING COASTAL WATERS TONIGHT... ...WIND ADVISORY ACROSS THE MAINLAND AND KEYS TONIGHT... ...COASTAL FLOOD WATCH COLLIER AND MAINLAND MONROE GULF COAST TONIGHT... STRONG SOUTHEAST WINDS WHICH WILL BECOME SOUTHERLY OVERNIGHT WILL PRODUCE PROBLEMS OVER LAND AND COASTAL AREAS OF SOUTH FLORIDA TONIGHT. GALE WARNINGS FOR WIND OF 30 TO 35 KT ARE POSSIBLE OVER THE COASTAL WATERS. ON THE MAINLAND...THIS MEANS SUSTAINED WINDS OF 20 TO 25 MPH ARE POSSIBLE THROUGH THE NIGHT. ON THE SOUTHWEST FLORIDA COAST...THESE STRONG WINDS MAY CREATE SEAS OF 2 TO 3 FT ABOVE HIGH TIDE AFTER MIDNIGHT AND COASTAL FLOODING IS POSSIBLE. STRONG THUNDERSTORMS ARE ALSO EXPECTED OVER SOUTH FLORIDA AND THE KEYS THIS EVENING AND SOME THUNDERSTORMS MAY BE SEVERE.
Special weather statement, Feb 15, 3:30 PM EST, 4 hours 57 minutes before
AMZ610-630-650>654-656-670>676-FLZ063-066>078-161200- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 330 PM EST SUN FEB 15 1998 ...GALE WARNING SURROUNDING COASTAL WATERS TONIGHT... ...WIND ADVISORY ACROSS THE MAINLAND AND KEYS TONIGHT... ...COASTAL FLOOD WATCH COLLIER AND MAINLAND MONROE GULF COAST TONIGHT... STRONG SOUTHEAST WINDS WHICH WILL BECOME SOUTHERLY OVERNIGHT WILL PRODUCE PROBLEMS OVER LAND AND COASTAL AREAS OF SOUTH FLORIDA TONIGHT. GALE WARNINGS FOR WIND OF 30 TO 35 KT ARE POSSIBLE OVER THE COASTAL WATERS. ON THE MAINLAND...THIS MEANS SUSTAINED WINDS OF 20 TO 25 MPH ARE POSSIBLE THROUGH THE NIGHT. ON THE SOUTHWEST FLORIDA COAST...THESE STRONG WINDS MAY CREATE SEAS OF 2 TO 3 FT ABOVE HIGH TIDE AFTER MIDNIGHT AND COASTAL FLOODING IS POSSIBLE. STRONG THUNDERSTORMS ARE ALSO EXPECTED OVER SOUTH FLORIDA AND THE KEYS THIS EVENING AND SOME THUNDERSTORMS MAY BE SEVERE.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 7:04 PM EST | Tornado Warning | MFL | Collier | 61 min |
| Feb 15, 8:02 PM EST | Tornado Warning | MFL | Collier | 58 min |
| Feb 15, 9:19 PM EST | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 61 min |
| Feb 15, 11:07 PM EST | Severe Thunderstorm Warning | MFL | Palm Beach | 38 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1998Every severe thunderstorm warning in 1998
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.