Alert archive / Florida / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 84, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 13, 2004, 10:56 AM EDT for Hendry County, Florida. It was in force for 49 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 13, 2004, 10:56 AM EDT (14:56 UTC)
- Expired
- Aug 13, 2004, 11:45 AM EDT
- In force
- 49 min
- Issued by
- NWS Miami, FL
- Area
- Counties, with a storm outline in the text
County Hendry County, FL
The radar
The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 14:59 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 |
|---|---|---|---|
| Aug 13, 11:30 AM EDT | TORNADO | Devils Garden, FL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 13, 7:30 AM EDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 2.9 hours before the alert went out and 102 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
- 1914 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 6.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KMFL 131456 CCA SVRMIA FLC051-131545- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE MIAMI FL 1053 AM EDT FRI AUG 13 2004 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN HENDRY COUNTY IN SOUTH FLORIDA. * UNTIL 1145 AM EDT * AT 1053 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STORM CAPABLE OF PRODUCING DAMAGING WINDS 23 MILES SOUTH OF DEVILS GARDEN...MOVING NORTH AT 30 MPH INTO THE BIG CYPRESS RESERVATION. * THE STORM WILL AFFECT... BIG CYPRESS RESERVATION BY 1105 AM EDT. DEVILS GARDEN BY 1130 AM EDT. CLEWISTON BY 1145 AM EDT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS SPOTTED. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. LAT...LON 2622 8111 2623 8091 2674 8094 2674 8119 $$ EC
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.
NWS Miami, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 13, 10:30 AM EDT, 26 minutes earlier.
Area forecast discussion, Aug 13, 10:30 AM EDT, 26 minutes before
SOUTH FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 1030 AM EDT FRI AUG 13 2004 .UPDATE...UPPER TROUGH AND ASSOCIATED NORTHEAST-SOUTHWEST ORIENTED BOUNDARY LOCATED OVER NORTH/CENTRAL FLORIDA. ATMOSPHERE REMAINS MOIST OVER SOUTH FLORIDA WITH 2.03 INCH PWAT FROM THE MORNING MFL SOUNDING. LIGHT SOUTHEAST MEAN FLOW SHOWING UP IN WIND PROFILES SUGGESTS AFTERNOON SEABREEZE THUNDERSTORMS WILL GENERALLY PUSH INLAND ALONG THE EAST COAST...EXCEPT PERHAPS NEAR PALM BEACH COUNTY WHERE WIND REGIME IS MORE SOUTHERLY. WEST COAST SEABREEZE SHOULD BE MOST ACTIVE...THUS UPPING POPS TO 60% FOR GLADES...HENDRY...AND COLLIER. UNFORTUNATELY...MOST OF TODAYS WEATHER SHOULD OCCUR IN AREAS THAT MOST NEED GOOD WEATHER CONDITIONS AFTER CHARLEY. A FEW BRIEF HEAVY DOWNPOURS POSSIBLE THIS AFTERNOON. && HANDEL .620 AM UPDATE...QUICK UPDATE TO THE WEST COAST REGION AS A BROKEN LINE OF SHOWERS AND THUNDERSTORMS HAVE FORMED OVER THIS REGION EARLY THIS MORNING. ACTIVITY SHOULD CONTINUE OVER THE GULF WATERS THROUGH THE MORNING HOURS AND MOVE INTO WESTERN METRO AREAS OF SOUTH FLORIDA. SO PLAN ON REMOVING THE MORNING WORDING...AND JUST SAY A CHANCE WORDING FOR THE WEST COAST. .PREVIOUS DISCUSSION...HURRICANE CHARLEY IS MOVING TO THE NORTHEAST EARLY THIS MORNING OVER THE NORTHWEST ATLANTIC WATERS. THE HURRICANE WILL CONTINUE TO MOVE NORTHEAST TOWARDS THE CAROLINAS COAST TODAY...AS THE STATIONARY FRONT REMAIN OVER THE NORTHERN GULF WATERS OF MEXICO ACROSS NORTHERN FLORIDA. THIS WILL KEEP SOUTH FLORIDA IN A SOUTHERLY FLOW TODAY...AND THERE COULD STILL BE A FEW OUTER FEEDER BANDS THAT COULD EXTEND DOWN INTO THE CWA AREA. BUT IF ANY OF THEM DEVELOP...THEY SHOULD BE OVER MOSTLY THE NORTHERN PORTIONS OF THE CWA. SO PLAN ON HAVING THE HIGHEST POPS OVER THE NORTHERN PORTIONS OF THE CWA DECREASING AS YOU GO SOUTH THROUGH THE CWA. THE STATIONARY FRONT WILL WEAKEN THROUGH SUNDAY...AS THE TROUGH OF LOW PRESSURE OVER THE EASTERN US LIFTS OUT TO THE NORTHEAST. HIGH PRESSURE WILL ALSO BUILD INTO CENTRAL FLORIDA THROUGH SUNDAY FROM THE ATLANTIC WATERS...AND SHIFT THE STEERING FLOW FROM THE SOUTH TO THE EAST. THIS WILL PUSH MOST OF THE SHOWERS AND THUNDERSTORMS ACTIVITY TO THE INTERIOR AND WEST COAST ON SUNDAY. .EXTENDED FORECAST...THE HIGH WILL REMAIN NEARLY STATIONARY THROUGH EARLY NEXT WEEK...AS A WEAK TROPICAL WAVE OVER THE LESSER ANTILLES ISLANDS MOVES NORTHWEST TOWARDS SOUTH FLORIDA. THE NORTHERN PORTION OF THE WAVE COULD MOVE THROUGH SOUTH FLORIDA MONDAY NIGHT OR EARLY TUESDAY. SO PLAN ON RAISING THE POPS A LITTLE ON TUESDAY TO ACCOUNT THE INCREASE MOISTURE OVER SOUTH FLORIDA ON TUESDAY. TROPICAL DEPRESSION #5 EAST OF THE LESSER ANTILLES IS FORECAST BY THE NHC TO MOVE NORTHWEST TO AROUND THE JAMAICA ISLAND BY MIDDLE OF NEXT WEEK. THEREFORE THE FORECAST IS VERY UNCERTAIN FOR LATE NEXT WEEK DEPENDING ON THE TRACK AND STRENGTH OF DEPRESSION #5. AT THIS TIME PLAN ONLY TO INCREASE THE MOISTURE A LITTLE OVER SOUTH FLORIDA LATE NEXT WEEK TO SHOW THAT THE DEPRESSION #5 IS IN THE AREA OF SOUTH FLORIDA. && .MARINE...THE WINDS EARLY THIS MORNING OVER THE ATLANTIC WATERS WERE BETWEEN 15 TO 20 KNOTS AND SHOULD SLOWLY DECREASE TO AROUND 10 TO 15 KNOTS BY AFTERNOON. OVER THE GULF AND LAKE WATERS...THE WINDS WERE 10 TO 15 KNOTS EARLY THIS MORNING. THESE WINDS SPEED SHOULD ALSO SLOWLY DECREASE TO AROUND 10 KNOTS BY AFTERNOON. THE SEAS WILL ALSO SLOWLY SUBSIDE FROM 2 TO 4 FEET DOWN TO 2 FEET BY AFTERNOON. THEREFORE...PLAN ON DROPPING THE SCA FOR THE SOUTH FLORIDA WATERS...AND PUT UP A SCEC FOR THE ATLANTIC WATERS ONLY FOR THIS MORNING. THE WINDS WILL THEN BE AROUND 10 KNOTS THROUGH MONDAY...AS THEY SHIFT FROM A SOUTH DIRECTION TO A EAST DIRECTION. THE WINDS WILL THEN INCREASE MONDAY NIGHT INTO TUESDAY AHEAD OF THE TROPICAL WAVE TO 10 TO 15 KNOTS...AND INCREASE THE SEAS OVER THE ATLANTIC WATERS TO 2 TO 4 FEET. THE WINDS WILL THEN REMAIN AROUND 10 TO 15 KNOTS THROUGH REST OF THE WEEK WITH SEAS 2 TO 4 FEET...AS TROPICAL DEPRESSION #5 GETS CLOSER TO SOUTH FLORIDA. && .FIRE WEATHER...NO CONCERNS WITH PLENTY OF MOISTURE AROUND. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 92 78 91 78 / 50 30 30 20 FORT LAUDERDALE 90 80 89 81 / 40 20 20 20 MIAMI 91 79 90 80 / 30 20 30 20 NAPLES 90 75 91 74 / 50 30 40 30 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && BAXTER
Hazardous weather outlook, Aug 13, 6:00 AM EDT, 4 hours 56 minutes before
6HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 600 AM EDT FRI AUG 13 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA FLZ063-066>075-132200- BROWARD METROPOLITAN-DADE METROPOLITAN-EASTERN COLLIER-GLADES-HENDRY- MAINLAND MONROE-PALM BEACH EASTERN-PALM BEACH WESTERN- WESTERN BROWARD-WESTERN COLLIER-WESTERN DADE- 600 AM EDT FRI AUG 13 2004 .DAY ONE...TODAY ...HURRICANE CHARLEY AFFECTING SOUTH FLORIDA TODAY... HURRICANE CHARLEY WILL MOVE NORTH OVER THE EASTERN GULF OF MEXICO TODAY, MAKING LANDFALL ALONG THE WEST CENTRAL FLORIDA COAST THIS EVENING. REFER TO THE LATEST HURRICANE LOCAL STATEMENT FOR DETAILS ON THIS WEATHER SITUATION. ADDITIONAL INFORMATION CAN BE FOUND ON THE NATIONAL WEATHER SERVICE WEB SITE AT MIAMIWEATHER.INFO. IN SPANISH, VISIT OUR WEB SITE AT ELTIEMPOENMIAMI.INFO. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... REPORTS OF ANY DAMAGING WINDS, FLOODING, AND TORNADOES WILL BE NEEDED TODAY. PS
In the hours before
Special weather statement, Aug 13, 7:21 AM EDT, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 721 AM EDT FRI AUG 13 2004 FLZ070-073-075-131200- EASTERN COLLIER-MAINLAND MONROE-WESTERN DADE- 721 AM EDT FRI AUG 13 2004 ...THUNDERSTORM MOVING TOWARD U.S. HIGHWAY 41 IN THE EVERGLADES... AT 721 AM...NATIONAL WEATHER SERVICE RADAR SHOWED A THUNDERSTORM OVER THE EVERGLADES...APPROXIMATELY 8 MILES SOUTHWEST OF FORTYMILE BEND. THE STORM WAS MOVING TO THE NORTH AT 20 MPH...AND SHOULD REACH U.S. HIGHWAY 41 BETWEEN FORTYMILE BEND AND MONROE STATION BY 8 AM THIS MORNING...NEAR THE DADE COLLIER TRAINING AIRPORT. RADAR SHOWED A WEAK ROTATION WITH THIS STORM. THE ROTATION APPEARED TOO BROAD AND WEAK TO BE TORNADIC. HOWEVER...STRONG WINDS ARE POSSIBLE WITH THIS STORM. MOTORISTS TRAVELLING ALONG U.S. HIGHWAY 41 THROUGH THE EVERGLADES AND PERSONNEL AT THE DADE COLLIER TRAINING AIRPORT SHOULD BE ALERT FOR THE POSSIBILITY OF STRONG WINDS TO 45 MPH...HEAVY RAINFALL...AND OCCASIONAL LIGHTNING. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT FRIDAY MORNING FOR SOUTHERN FLORIDA.
Special weather statement, Aug 13, 9:09 AM EDT, 1 hour 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 909 AM EDT FRI AUG 13 2004 FLZ066-070-131330- EASTERN COLLIER-HENDRY- 909 AM EDT FRI AUG 13 2004 ...STRONG STORM OVER BIG CYPRESS NATIONAL WILDLIFE PRESERVE... AT 909 AM...NATIONAL WEATHER SERVICE RADAR INDICATED A STRONG STORM OVER THE BIG CYPRESS NATIONAL WILDLIFE PRESERVE...APPROXIMATELY 20 MILES EAST OF ROCK ISLAND...IN RURAL EASTERN COLLIER COUNTY. THIS STORM WAS MOVING TO THE NORTH AT 40 MPH. THE STORM IS MOVING RAPIDLY TOWARD INTERSTATE 75...ALLIGATOR ALLEY NEAR MILE MARKER 70. A WEAK ROTATION WAS INDICATED WITH THIS STORM. WHILE NOT CONSIDERED TORNADIC...THE STORM MAY INTENSIFY. MOTORISTS ALONG INTERSTATE 75 SHOULD BE ALERT TO THE POSSIBILITY OF STRONG WINDS AND HEAVY RAINS IN THE NEXT 10 TO 15 MINUTES AS THE STORM MOVE OVER THE ROAD. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT FRIDAY AFTERNOON FOR SOUTHERN FLORIDA.
Special weather statement, Aug 13, 9:54 AM EDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 954 AM EDT FRI AUG 13 2004 FLZ070-131430- EASTERN COLLIER- 954 AM EDT FRI AUG 13 2004 AT 954 AM...NATIONAL WEATHER SERVICE RADAR INDICATED A SHOWER CAPABLE OF PRODUCING STRONG WINDS...FIVE MILES NORTH OF THE OASIS RANGER STATION...MOVING NORTH AT 40 MPH THROUGH THE BIG CYPRESS NATIONAL WILDLIFE PRESERVE...IN RURAL EASTERN COLLIER COUNTY. A WEAK ROTATION WAS EVIDENT ON RADAR...ALTHOUGH NOT SEVERE AT THIS TIME. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT FRIDAY AFTERNOON FOR SOUTHERN FLORIDA.
Special weather statement, Aug 13, 10:28 AM EDT, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 1028 AM EDT FRI AUG 13 2004 FLZ066-070-131500- EASTERN COLLIER-HENDRY- 1028 AM EDT FRI AUG 13 2004 ...STRONG STORMS MOVING THROUGH BIG CYPRESS WILDLIFE PRESERVE... AT 1028 AM...NATIONAL WEATHER SERVICE RADAR CONTINUED TO SHOW STRONG STORMS MOVING NORTH AT 40 MPH...APPOXIMATELY 10 MILES SOUTHWEST OF THE MICCOSUKEE INDIAN RESERVATION. THE STORMS ARE MOVING THROUGH THE BIG CYPRESS WILDLIFE PRESERIVE...IN RURAL EASTERN COLLIER COUNTY...AND WILL BEGIN CROSSING INTERSTATE 75...ALLIGATOR ALLEY AROUND 1045 AM...THEN CONTINUE NORTHWARD PASSING EAST OF THE HENDRY CORRECTIONAL INSTITUTE. MOTORISTS ON INTERSTATE 75 BETWEEN MILE MARKERS 50 AND 60 SHOULD REMAIN ON THE ALERT FOR STRONG WINDS...HEAVY RAINFALL AND OCCASIONAL LIGHTNING. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT FRIDAY AFTERNOON FOR SOUTHERN FLORIDA.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 11:58 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 47 min |
| Aug 13, 1:27 AM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 63 min |
| Aug 13, 1:29 AM EDT | Severe Thunderstorm Warning | MFL | Collier | 46 min |
| Aug 13, 2:54 AM EDT | Severe Thunderstorm Warning | MFL | Glades | 21 min |
| Aug 13, 8:44 AM EDT | Tornado Warning | MFL | Collier, Hendry | 46 min |
| Aug 13, 10:54 AM EDT | Severe Thunderstorm Warning | MFL | Collier, Hendry | 51 min |
| Aug 13, 11:06 AM EDT | Tornado Warning | MFL | Hendry | 39 min |
| Aug 13, 11:41 AM EDT | Special Marine Warning | MFL | 64 min | |
| Aug 13, 11:45 AM EDT | Tornado Warning | MFL | Glades, Hendry | 30 min |
| Aug 13, 12:17 PM EDT | Tornado Warning | MFL | Glades | 43 min |
| Aug 13, 12:37 PM EDT | Flash Flood Warning | MFL | Glades, Hendry | 3 hr |
| Aug 13, 3:05 PM EDT | Tornado Warning | MFL | Collier, Hendry | 25 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2004Every severe thunderstorm warning in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.