Alert archive / Florida / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 122, NWS Miami, FL

July 18, 2009Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 18, 2009, 8:50 PM EDT for Miami-Dade County, Florida. It was in force for 27 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: Jul 18, 2009, 8:50 PM EDT (00:50 UTC)
Expired: Jul 18, 2009, 9:17 PM EDT
In force: 27 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 9 km from the middle of the area, began a volume at 00:53 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 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 Jul 18, 8:03 PM EDT, 47 minutes earlier.

Area forecast discussion, Jul 18, 8:03 PM EDT, 47 minutes before

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Hazardous weather outlook, Jul 18, 9:49 AM EDT, 11 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...CORRECTED
NATIONAL WEATHER SERVICE MIAMI FL
949 AM EDT SAT JUL 18 2009

FLZ063-066>075-168-172>174-182300-
GLADES-HENDRY-INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-
INLAND COLLIER-INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-
METRO MIAMI DADE-MAINLAND MONROE-COASTAL PALM BEACH-
COASTAL BROWARD-COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
949 AM EDT SAT JUL 18 2009

...ISOLATED STRONG THUNDERSTORMS POSSIBLE LATE AFTERNOON AND EARLY EVENING...
...AFTERNOON HEAT INDEX 105 TO 110 DEGREES...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS: ISOLATED SHOWERS NEAR THE COASTAL AREAS LATE
MORNING AND EARLY AFTERNOON WILL DIMINISH. SCATTERED THUNDERSTORMS
WILL THEN DEVELOP OVER THE INTERIOR AREAS OF MAINLAND SOUTH
FLORIDA BY MID AFTERNOON, MOVING EAST AND NORTHEAST TOWARD THE
LAKE OKEECHOBEE REGION AND THE METRO ATLANTIC COASTAL AREAS OF
NORTH DADE, BROWARD AND PALM BEACH COUNTIES. SOME THUNDERSTORMS
MAY BE STRONG WITH DAMAGING WINDS AND POSSIBLY EVEN SOME SMALL
HAIL. FREQUENT CLOUD TO GROUND LIGHTNING STRIKES ARE LIKELY.

WIND: SOME OF THE THUNDERSTORMS COULD PRODUCE WIND GUSTS AS HIGH
AS 55 TO 60 MPH MAINLY ACROSS THE LAKE OKEECHOBEE REGION AND PALM
BEACH AND BROWARD COUNTIES LATE THIS AFTERNOON AND EVENING.

HAIL: HAIL UP TO PENNY SIZE IS POSSIBLE MAINLY ACROSS THE LAKE
OKEECHOBEE REGION AND PALM BEACH AND BROWARD COUNTIES LATE THIS
AFTERNOON AND THIS EVENING.

TEMPERATURES: HIGH TEMPERATURES THIS AFTERNOON WILL CLIMB INTO
THE MID 90S OVER THE INTERIOR OF MAINLAND SOUTH FLORIDA AND THE
WESTERN SUBURBS OF PALM BEACH, BROWARD, AND MIAMI-DADE
METROPOLITAN AREAS. THESE TEMPERATURES COMBINED WITH HIGH
HUMIDITY, WILL RESULT IN HEAT INDICES AROUND 105 DEGREES IN THE
METRO AREAS AND AS HIGH AS 110 DEGREES IN THE INTERIOR AREAS OF
MAINLAND SOUTH FLORIDA.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED
EACH DAY, WITH AN INCREASE IN THE AMOUNT OF ACTIVITY POSSIBLE
ESPECIALLY TUESDAY AND WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER
INDIVIDUAL SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND, HAIL AND OR
FLOODING TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MIAMI.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

In the hours before

Special weather statement, Jul 18, 5:11 PM EDT, 3 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
511 PM EDT SAT JUL 18 2009

FLZ067-182145-
INLAND PALM BEACH COUNTY FL-
511 PM EDT SAT JUL 18 2009

...STRONG THUNDERSTORMS MOVING ACROSS INLAND PALM BEACH COUNTY...

AT 509 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS NEAR HOLEY LAND WILDLIFE MANAGEMENT
AREA...MOVING NORTHEAST AT 10 MPH. THESE STORMS MAY MOVE ACROSS
HIGHWAY 27 BY 530 PM EDT WITH STRONG WIND GUSTS...SMALL HAIL AND
TORRENTIAL DOWNPOURS MAKING DRIVING VERY HAZARDOUS.

THIS STORM WILL AFFECT...

HOLEY LAND WILDLIFE MANAGEMENT AREA...

AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED
HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE.
LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES
AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN
DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL
OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES.

LAT...LON 2667 8069 2678 8053 2672 8036 2634 8034
      2634 8087 2666 8088
TIME...MOT...LOC 2110Z 239DEG 7KT 2644 8078

KOB

Special weather statement, Jul 18, 5:45 PM EDT, 3 hours 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
545 PM EDT SAT JUL 18 2009

FLZ067-182215-
INLAND PALM BEACH COUNTY FL-
545 PM EDT SAT JUL 18 2009

...STRONG THUNDERSTORMS CONTINUE ACROSS INLAND PALM BEACH COUNTY...

AT 544 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE STRONG THUNDERSTORMS ACROSS INLAND PALM BEACH COUNTY WITH
THE STRONGEST STORM LOCATED 7 MILES SOUTHEAST OF OKEELANTA...MOVING
NORTHEAST AT 10 MPH. THESE STORMS WILL REMAIN OVER RURAL AREAS BUT
WILL MAKE DRIVING VERY HAZARDOUS AS THEY PRODUCE TORRENTIAL
DOWNPOURS AND STRONG GUSTY WINDS ALONG WITH SMALL HAIL.

THIS STORM WILL AFFECT...

  RURAL CENTRAL PALM BEACH COUNTY

AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED
HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE.
LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES
AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN
DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL
OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES.

LAT...LON 2671 8062 2679 8030 2634 8029 2634 8084
      2653 8084
TIME...MOT...LOC 2144Z 240DEG 8KT 2654 8062

KOB

Special weather statement, Jul 18, 6:20 PM EDT, 2 hours 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
620 PM EDT SAT JUL 18 2009

FLZ067-068-168-182300-
INLAND PALM BEACH COUNTY FL-METRO PALM BEACH COUNTY FL-
COASTAL PALM BEACH COUNTY FL-
620 PM EDT SAT JUL 18 2009

...STRONG THUNDERSTORMS MOVING ACROSS EASTERN PALM BEACH COUNTY...

AT 619 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM GREENACRES CITY TO 9
MILES WEST OF MISSION BAY...MOVING SOUTHEAST AT 25 MPH.

THESE STORMS WILL AFFECT...

FLORIDA GARDENS...
PALM SPRINGS...
ATLANTIS...
BOCA RATON EQUESTRIAN CENTER...
MISSION BAY...
BOCA WEST...

AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED
HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE.
LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES
AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN
DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL
OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES.

LAT...LON 2667 8006 2635 8012 2634 8044 2673 8017
TIME...MOT...LOC 2219Z 295DEG 22KT 2664 8013 2640 8035

KOB

Local storm report, Jul 18, 7:12 PM EDT, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
712 PM EDT SAT JUL 18 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0653 PM     TSTM WND GST     PALM BEACH              26.70N 80.04W
07/18/2009  M54 MPH          PALM BEACH         FL   ASOS

            PALM BEACH INTERNATIONAL AIRPORT RECORDED 47 KNOTS.

&&

TINGLER

Local storm report, Jul 18, 7:59 PM EDT, 51 minutes before

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Local storm report, Jul 18, 8:10 PM EDT, 40 minutes before

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The office that day

Everything else NWS Miami, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 1:30 PM EDT	Special Weather Statement	MFL	Broward	30 min
Jul 19, 1:47 PM EDT	Special Weather Statement	MFL	Glades	28 min
Jul 19, 2:26 PM EDT	Special Weather Statement	MFL	Hendry	49 min
Jul 19, 2:40 PM EDT	Special Weather Statement	MFL	Monroe	35 min
Jul 19, 2:43 PM EDT	Special Weather Statement	MFL	Collier	32 min
Jul 19, 3:01 PM EDT	Special Weather Statement	MFL	Hendry	44 min
Jul 19, 3:11 PM EDT	Special Marine Warning	MFL		64 min
Jul 19, 3:15 PM EDT	Severe Thunderstorm Warning	MFL	Glades, Hendry, Palm Beach	60 min
Jul 19, 3:26 PM EDT	Special Weather Statement	MFL	Broward	64 min
Jul 19, 3:43 PM EDT	Special Weather Statement	MFL	Miami-Dade	47 min
Jul 19, 3:45 PM EDT	Special Weather Statement	MFL	Martin	30 min
Jul 19, 3:49 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Collier, Miami-Dade	56 min
Jul 19, 3:56 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	52 min
Jul 19, 4:01 PM EDT	Special Weather Statement	MFL	Glades	44 min
Jul 19, 4:21 PM EDT	Special Weather Statement	MFL	Broward	24 min
Jul 19, 4:22 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	23 min
Jul 19, 4:31 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade, Palm Beach	39 min
Jul 19, 4:38 PM EDT	Special Weather Statement	MFL	Hendry	37 min
Jul 19, 4:50 PM EDT	Special Weather Statement	MFL	Palm Beach	25 min
Jul 19, 4:52 PM EDT	Special Marine Warning	MFL		68 min
Jul 19, 4:57 PM EDT	Special Marine Warning	MFL		48 min
Jul 19, 5:03 PM EDT	Special Weather Statement	MFL	Broward	27 min
Jul 19, 5:19 PM EDT	Special Weather Statement	MFL	Palm Beach	26 min
Jul 19, 5:38 PM EDT	Special Marine Warning	MFL		112 min
Jul 19, 5:42 PM EDT	Special Marine Warning	MFL		63 min
Jul 19, 6:41 PM EDT	Special Marine Warning	MFL		47 min

Nearby

Severe Thunderstorm Warnings in Florida, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.