Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 3, NWS Key West, FL
NWS Key West, FL issued this severe thunderstorm warning at Mar 13, 1993, 3:05 AM EST for Monroe County, Florida. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Mar 13, 1993, 3:05 AM EST (08:05 UTC)
- Expired
- Mar 13, 1993, 3:40 AM EST
- In force
- 35 min
- Issued by
- NWS Key West, FL
- Area
- Whole counties
County Monroe County, FL
The nearest sounding before it
Key West, FL (KEYW), launched 00:00Z, 8.1 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 277 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 13.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEYW 130807 SVREYW FLC087-110840- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE KEY WEST FL 305 AM EST SAT MAR 13 1993 THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 340 AM EST FOR PEOPLE IN THE FOLLOWING COUNTY IN SOUTH FLORIDA...MONROE FROM THE MARQUESAS KEYS TO ROCKLAND KEY AND THE ADJACENT COASTAL WATERS. AT 305 AM EST RADAR WAS INDICATING A NARROW AND VERY FAST MOVING LINE OF SEVERE THUNDERSTORMS FROM 25 MILES WEST OF CAPE SABLE TO BETWEEN KEY WEST AND THE MARQUESAS KEYS...CONTINUING TO CUBA. MOVEMENT WAS RAPIDLY EAST AT 45 TO 50 MILES AN HOUR. . DAMAGING THUNDERSTORM WINDS...HAIL...CLOUD TO GROUND LIGHNTING STRIKES AND VERY HEAVY RAIN CAN BE EXPECTED IN THE WARNED AREA. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUILDING. WHILE THE STORM IS OVERHEAD DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES...UNLESS IN AN ABSOLUTE EMERGENCY. BOATERS IN THE WARNED AREA SHOULD STEER CLEAR OF THESE DANGEROUS STORMS AND MOVE QUICKLY TO SAFE HARBOR IF POSSIBLE..OR TO REMAIN IN PORT UNTIL CONDITIONS IMPROVE. BE PREPARED FOR WIND GUSTS PAST 50 KNOTS AND EXTREMELY ROUGH SEAS. ENSURE THAT ALL PERSONS ONBOARD ARE WEARING APPROVED FLOTATION DEVICES. . WHEN SAFE...REPORT SEVERE WEATHER TO A LOCAL EMERGENCY AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE SO OTHERS CAN BE WARNED. STAY TUNED TO THIS STATION FOR THE LATEST IMFORMATION FROM THE NATIONAL WEATHER SERVICE IN KEY WEST. /5
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 12, 10:47 PM EST, 4 hours 18 minutes before
FLZ023-130435- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KEY WEST FL 1035 PM EST FRI MAR 12 1993 ...A TORNADO WATCH IS IN EFFECT FROM 1100 PM FRIDAY UNTIL 700 AM SATURDAY FROM KEY WEST TO KEY LARGO AND THE SURROUNDING COASTAL WATERS... THE SEASONS STRONGEST COLD FRONT WILL CONTINUE TO NEAR THE KEYS OVERNIGHT FROM THE EASTERN GULF OF MEXICO...AND THERE IS THE POTENTIAL FOR TORNDOES OVER AND NEAR THE KEYS...OR AT THE LEAST STRONG THUNDERSTORMS WITH VERY STRONG WINDS AND VERY HEAVY RAINS. RADAR AS OF 1035 PM WAS SHOWING THE LEADING EDGE OF THE THUNDERSTORMS STILL ABOUT 75 MILES WEST OF DRY TORTUGAS...OR ABOUT 150 MILES WEST OF KEY WEST. MOVEMENT WAS GENERALLY EAST AROUND 40 MILES AN HOUR. THIS SPEED AND MOVEMENT SHOULD IT CONTINUE...WOULD BRING THE THUNDERSTORMS INTO THE KEY WEST AREA AROUND 200 AM OR 300 AM SATURDAY. THE STORMS WOULD THEN CONTINUE EASTWARD DURING THE REST OF THE MORNING. . WIND GUSTS TO NEAR 60 OR 65 MILES AN HOUR HAVE BEEN ASSOCIATED WITH THIS COLD FRONT...SO MARINERS AND KEYS RESIDENTS SHOULD BE ALERT TO THE FACT THAT SIMILAR CONDITIONS COULD OCCUR IN THE KEYS AREA AS THE THUNDERSTORMS APPROACH. AFTER THE FRONTAL PASSAGE ON SATURDAY...VERY STRONG NORTHWEST WINDS WILL CONTINUE...AND THIS WILL USHER IN PROBABLY THE COLDEST WEATHER THIS WINTER ACROSS THE KEYS...WITH NIGHT TIME LOWS SATURDAY NIGHT AND SUNDAY NIGHT PROBABLY WELL DOWN INTO THE 50S. STAY TUNED TO THIS STAT<ION FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE IN KEY WEST. /5
Special weather statement, Mar 12, 11:28 PM EST, 3 hours 37 minutes before
FLZ023-130535- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KEY WEST FL 1125 PM EST FRI MAR 12 1993 ...A TORNADO WATCH IS IN EFFECT 700 AM SATURDAY FROM KEY WEST TO KEY LARGO...MAINLAND MONROE COUNTY...AND THE SURROUNDING COASTAL WATERS... THE SEASONS STRONGEST COLD FRONT WILL CONTINUE TO NEAR THE AREA OVERNIGHT FROM THE EASTERN GULF OF MEXICO...AND THERE IS THE POTENTIAL FOR TORNDOES OVER AND NEAR THE KEYS...OR AT THE LEAST...STRONG THUNDERSTORMS WITH VERY STRONG WINDS...VERY HEAVY RAINS...AND CLOUD TO GROUND LIGHTNING. HAIL AND WATERSPOUTS ARE ALSO POSSIBLE. RADAR AS OF 1125 PM WAS SHOWING THE LEADING EDGE OF THE THUNDERSTORMS STILL ABOUT 50 MILES WEST OF DRY TORTUGAS...OR ABOUT 125 MILES WEST OF KEY WEST. MOVEMENT WAS GENERALLY EAST AT 35 TO 30 MILES AN HOUR. THIS SPEED AND MOVEMENT...SHOULD IT CONTINUE...WOULD BRING THE THUNDERSTORMS INTO THE KEY WEST AREA AROUND 300 AM SATURDAY. THE STORMS WOULD THEN CONTINUE EAST THE REST OF THE MORNING. . WIND GUSTS TO NEAR 60 OR 65 MILES AN HOUR HAVE BEEN ASSOCIATED WITH THIS COLD FRONT...SO MARINERS AND KEYS RESIDENTS SHOULD BE ALERT TO THE FACT THAT SIMILAR CONDITIONS COULD OCCUR IN THE KEYS AREA AS THE THUNDERSTORMS APPROACH. AFTER THE FRONTAL PASSAGE ON SATURDAY...VERY STRONG NORTHWEST WINDS WILL CONTINUE...AND THIS WILL USHER IN PROBABLY THE COLDEST WEATHER THIS WINTER ACROSS THE KEYS...WITH NIGHT TIME LOWS SATURDAY NIGHT AND SUNDAY NIGHT PROBABLY WELL DOWN INTO THE 50S. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE IN KEY WEST. /5
Special weather statement, Mar 12, 11:33 PM EST, 3 hours 32 minutes before
FLZ023-130535- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED NATIONAL WEATHER SERVICE KEY WEST FL 1125 PM EST FRI MAR 12 1993 ...A TORNADO WATCH IS IN EFFECT UNTIL 700 AM SATURDAY FROM KEY WEST TO KEY LARGO...FOR MAINLAND MONROE COUNTY...AND THE SURROUNDING COASTAL WATERS... THE SEASONS STRONGEST COLD FRONT WILL CONTINUE TO NEAR THE AREA OVERNIGHT FROM THE EASTERN GULF OF MEXICO...AND THERE IS THE POTENTIAL FOR TORNDOES OVER AND NEAR THE KEYS...OR AT THE LEAST...STRONG THUNDERSTORMS WITH VERY STRONG WINDS...VERY HEAVY RAINS...AND CLOUD TO GROUND LIGHTNING. HAIL AND WATERSPOUTS ARE ALSO POSSIBLE. RADAR AS OF 1125 PM WAS SHOWING THE LEADING EDGE OF THE THUNDERSTORMS STILL ABOUT 50 MILES WEST OF DRY TORTUGAS...OR ABOUT 125 MILES WEST OF KEY WEST. MOVEMENT WAS GENERALLY EAST AT 35 TO 40 MILES AN HOUR. THIS SPEED AND MOVEMENT...SHOULD IT CONTINUE...WOULD BRING THE THUNDERSTORMS INTO THE KEY WEST AREA AROUND 300 AM SATURDAY. THE STORMS WOULD THEN CONTINUE EAST THE REST OF THE MORNING. . WIND GUSTS TO NEAR 60 OR 65 MILES AN HOUR HAVE BEEN ASSOCIATED WITH THIS COLD FRONT...SO MARINERS AND KEYS RESIDENTS SHOULD BE ALERT TO THE FACT THAT SIMILAR CONDITIONS COULD OCCUR IN THE KEYS AREA AS THE THUNDERSTORMS APPROACH. AFTER THE FRONTAL PASSAGE ON SATURDAY...VERY STRONG NORTHWEST WINDS WILL CONTINUE...AND THIS WILL USHER IN PROBABLY THE COLDEST WEATHER THIS WINTER ACROSS THE KEYS...WITH NIGHT TIME LOWS SATURDAY NIGHT AND SUNDAY NIGHT PROBABLY WELL DOWN INTO THE 50S. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE IN KEY WEST. /5
Special weather statement, Mar 13, 12:36 AM EST, 2 hours 29 minutes before
FLZ023-130635- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE KEY WEST FL 1235 AM EST SAT MAR 13 1993 ...A TORNADO WATCH IS IN EFFECT UNTIL 700 AM SATURDAY FROM KEY WEST TO KEY LAR RADAR AS OF 1225 AM WAS SHOWING THE LEADING EDGE OF THE THUNDERSTORMS FROM NEAR FORT MYERS TO JUST WEST OF DRY TORTUGAS...TO EXTREME NORTHWEST CUBA. MOVEMENT WAS EAST AT 45 MILES AN HOUR. . MARINERS AROUND DRY TORTUGAS SHOULD BE PREPARED FOR WIND GUSTS PAST 34 KNOTS...VERY ROUGH SEAS...CLOUD TO WATER LIGHTNING STRIKES...AND VERY HEAVY RAINS REDUCING VISIBILITIES TO NEAR ZERO. WATERSPOUTS ARE ALSO A POSSIBILITY. YOU ARE URGED TO STEER CLEAR OF THESE DANGEROUS STAORMS AND TO STAY AWAY FROM ALL METAL OBJECTS. MEANWHILE...IF THE STORMS CONTINUE TO MOVE AT THEIR PRESENT DIRECTION AND SPEED...THEY WOULD APPROACH THE KEY WEST AREA AROUND 300 AM OR 400 AM. STORMS WOULD SPREAD FURTHER EAST DURING THE MORNING HOURS. THERE HAVE BEEN REPORTS OF WIND GUSTS PAST 60 MILES AN HOUR WITH THIS COLD FRONT...SO YOU SHOULD BE PREPARED FOR SIMILAR CONDITIONS OVERNIGHT AND SATURDAY MORNING. THE FRONT WILL PUSH THROUGH DURING SATURDAY...AND VERY STRONG NORTHWEST WINDS WILL DEVELOP...USHERING IN THE COLDEST TEMPERATURES OF THE WINTER FOR SATURDAY NIGHT THROUGH MONDAY MORNING. LOW TEMPERATURES WILL FALL WELL INTO THE 50S BOTH NIGHTS OF THE WEEKEND. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE IN KEY WEST. /5
Special weather statement, Mar 13, 12:40 AM EST, 2 hours 25 minutes before
FLZ023-130635- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED NATIONAL WEATHER SERVICE KEY WEST FL 1235 AM EST SAT MAR 13 1993 ...A TORNADO WATCH IS IN EFFECT UNTIL 700 AM SATURDAY FROM KEY WEST TO KEY LARGO...FOR MAINLAND MONROE COUNTY...AND THE SURROUNDING COASTAL WATERS... ...SPECIAL MARINE WARNING IN EFFECT FOR THE WATERS AROUND DRY TORTUGAS TIL 145 AM SATURDAY... RADAR AS OF 1225 AM WAS SHOWING THE LEADING EDGE OF THE THUNDERSTORMS FROM NEAR FORT MYERS TO JUST WEST OF DRY TORTUGAS...TO EXTREME NORTHWEST CUBA. MOVEMENT WAS EAST AT 45 MILES AN HOUR. MARINERS AROUND DRY TORTUGAS SHOULD BE PREPARED FOR WIND GUSTS PAST 34 KNOTS...VERY ROUGH SEAS...CLOUD TO WATER LIGHTNING STRIKES...AND VERY HEAVY RAINS REDUCING VISIBILITIES TO NEAR ZERO. WATERSPOUTS ARE ALSO A POSSIBILITY. YOU ARE URGED TO STEER CLEAR OF THESE DANGEROUS STORMS AND TO STAY AWAY FROM ALL METAL OBJECTS. MEANWHILE...IF THE STORMS CONTINUE TO MOVE AT THEIR PRESENT DIRECTION AND SPEED...THEY WOULD APPROACH THE KEY WEST AREA AROUND 300 AM OR 400 AM. STORMS WOULD SPREAD FURTHER EAST DURING THE MORNING HOURS. THERE HAVE BEEN REPORTS OF WIND GUSTS PAST 60 MILES AN HOUR WITH THE STRONG COLD FRONT PRODUCING THE BAD WEATHER...SO YOU SHOULD BE PREPARED FOR SIMILAR WEATHER CONDITIONS OVERNIGHT AND SATURDAY MORNING. THE FRONT WILL PUSH THROUGH DURING SATURDAY...AND VERY STRONG NORTHWEST WINDS WILL DEVELOP...USHERING IN THE COLDEST TEMPERATURES OF THE WINTER FOR SATURDAY NIGHT THROUGH MONDAY MORNING. LOW TEMPERATURES WILL FALL WELL INTO THE 50S BOTH NIGHTS OF THE WEEKEND. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE IN KEY WEST. /5
The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 2:30 AM EST | Severe Thunderstorm Warning | KEY | Monroe | 30 min |
| Mar 13, 3:32 AM EST | Severe Thunderstorm Warning | KEY | Monroe | 33 min |
| Mar 13, 4:05 AM EST | Severe Thunderstorm Warning | KEY | Monroe | 30 min |
| Mar 13, 4:35 AM EST | Severe Thunderstorm Warning | KEY | Monroe | 30 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1993Every severe thunderstorm warning in 1993
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.