Alert archive / Florida / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 4, NWS Tampa Bay, FL

February 6, 20208 counties in Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Feb 6, 2020, 10:50 PM EST for 8 counties in Florida. It was in force for 55 min. 10 reports 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: Feb 6, 2020, 10:50 PM EST (03:50 UTC)
Expired: Feb 6, 2020, 11:45 PM EST
In force: 55 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Hernando County, FL, Hillsborough County, FL, Manatee County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 70 km from the middle of the area, began a volume at 03:52 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
Feb 6, 11:00 PM EST	TSTM WND DMG	3 N Macdill Air Force, FL	4 TREES DOWN AROUND HOME NEAR BRITTON PLAZA IN SOUTH TAMPA.
Feb 6, 11:00 PM EST	TSTM WND GST 43	3 W Macdill Air Force, FL	MESONET STATION OPTF1 OLD PORT TAMPA, FL.
Feb 6, 11:04 PM EST	TSTM WND GST 62	Anna Maria Island, FL
Feb 6, 11:14 PM EST	TSTM WND GST 47	7 Wnw Parrish, FL
Feb 6, 11:17 PM EST	TSTM WND GST 60	3 E Pinellas Park, FL	CORRECTS PREVIOUS TSTM WND GST REPORT FROM 3 E PINELLAS PARK. CRANE FELL OVER ONTO THE ROADWAY ON I-275 AT EXIT 29 IN ST. PETERSBURG.
Feb 6, 11:17 PM EST	TSTM WND GST 60	3 E Pinellas Park, FL	CRANE FELL OVER ONTO THE ROADWAY ON I-275 AT EXIT 29 IN ST. PETERSBURG.
Feb 6, 11:20 PM EST	TSTM WND DMG	4 Ne Saint Petersburg, FL	REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
Feb 6, 11:28 PM EST	TSTM WND DMG	2 Se Feather Sound, FL	REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.
Feb 6, 11:42 PM EST	TSTM WND DMG	1 E Temple Terrace, FL	3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN ALSO TREES ARE DOWN ON N 52 ST IN TEMPLE TERRACE.
Feb 6, 11:50 PM EST	TSTM WND GST 54	Lakeland Highlands, FL	MESONET STATION AR692 LAKELAND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 7 storm reports to this severe thunderstorm warning; the first came 10 minutes after it went out.

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
Feb 6, 9:25 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 3.8 hours before the alert went out and 70 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 312 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 877 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 393 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

As transmitted.

479 
WUUS52 KTBW 070350
SVRTBW
FLC053-057-081-101-103-105-115-119-070445-
/O.NEW.KTBW.SV.W.0004.200207T0350Z-200207T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tampa Bay Area Ruskin FL
1050 PM EST Thu Feb 6 2020

The National Weather Service in Ruskin has issued a

* Severe Thunderstorm Warning for...
  Sumter County in central Florida...
  Pasco County in west central Florida...
  Eastern Hernando County in west central Florida...
  Northwestern Manatee County in west central Florida...
  Central Pinellas County in west central Florida...
  Hillsborough County in west central Florida...
  Northwestern Polk County in central Florida...
  Northwestern Sarasota County in west central Florida...

* Until 1145 PM EST.

* At 1049 PM EST, severe thunderstorms were located along a line
  extending from 9 miles northeast of Inverness to near Land O Lakes
  to 25 miles southwest of Anna Maria, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Tampa, Clearwater, Lakeland, Largo, Sarasota, Bradenton, Pinellas
  Park, Plant City, Temple Terrace, Seminole, Auburndale,
  Zephyrhills, Palmetto, Brooksville, Wildwood, Dade City, Bushnell,
  Fort Desoto Park, Fish Hawk and Saint Petersburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 300 AM EST for central and 
west central Florida.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2827 8255 2867 8234 2867 8227 2872 8225
      2876 8218 2878 8219 2879 8217 2886 8223
      2896 8218 2896 8196 2835 8196 2835 8166
      2823 8170 2725 8245 2725 8263 2757 8283
      2772 8281 2777 8285
TIME...MOT...LOC 0349Z 266DEG 31KT 2894 8223 2819 8253 2736 8311 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TBW

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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 6, 8:03 PM EST, 2 hours 47 minutes earlier.

Area forecast discussion, Feb 6, 8:03 PM EST, 2 hours 47 minutes before

Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
803 PM EST Thu Feb 6 2020

.DISCUSSION...
Squall line is just entering the northern coastal waters this
evening, with a thin line of light showers well ahead of the line
in place across the inland zones. This line will continue to push
into the area through the evening and across the CWA overnight.
Gradient winds ahead of the line have lowered a bit from this
afternoon, but are still gusting into the 25-35kt range at
numerous locations. All warnings and advisories will remain
unchanged and no updates are planned except for possible headline
updates with any watches that may be issued later this evening.

&&

.AVIATION...
Some MVFR ceilings should be moving into the northern terminals
over the next couple of hours, with the line of storms then
possible generally after 03z and progressing southward through the
night. Winds will remain very strong through the squall line
passage, and then diminish a bit for the day Friday, and finally
dropping off generally after 21z as skies clear out.

&&

.MARINE...
Gale warning continues for the northern and central waters with
the SCA in place south through 1AM. Have SCA conditions then in
place across all waters until 10AM Friday. Winds and seas will
then subside through the day Friday, with no other concerns
through the period. Current forecast is on track and have no major
chances for the update.

&&

.Preliminary Point Temps/PoPs...
TPA  62  65  46  69 / 100   0   0   0
FMY  65  70  49  72 / 100  10   0   0
GIF  60  67  44  69 / 100   0   0   0
SRQ  63  66  47  70 / 100   0   0   0
BKV  57  63  41  69 / 100   0   0   0
SPG  62  64  48  69 / 100   0   0   0

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...High Rip Current Risk through Friday evening for Coastal
     Charlotte-Coastal Hillsborough-Coastal Lee-Coastal Manatee-
     Coastal Sarasota-Pinellas.

     High Surf Advisory until 7 PM EST Friday for Coastal Charlotte-
     Coastal Hillsborough-Coastal Lee-Coastal Manatee-Coastal
     Sarasota-Pinellas.

     Coastal Flood Advisory until 1 AM EST Friday for Coastal
     Charlotte-Coastal Citrus-Coastal Hernando-Coastal
     Hillsborough-Coastal Lee-Coastal Levy-Coastal Manatee-
     Coastal Pasco-Coastal Sarasota-Pinellas.

     Wind Advisory until 7 AM EST Friday for Coastal Citrus-Coastal
     Hernando-Coastal Hillsborough-Coastal Levy-Coastal Manatee-
     Coastal Pasco-Coastal Sarasota-DeSoto-Hardee-Highlands-
     Inland Citrus-Inland Hernando-Inland Hillsborough-Inland
     Levy-Inland Manatee-Inland Pasco-Inland Sarasota-Pinellas-
     Polk-Sumter.

     Lake Wind Advisory until 7 AM EST Friday for Coastal Charlotte-
     Coastal Lee-Inland Charlotte-Inland Lee.

Gulf waters...Small Craft Advisory from 1 AM to 10 AM EST Friday for Coastal
     waters from Englewood to Tarpon Springs FL out 20 NM-
     Coastal waters from Tarpon Springs to Suwannee River FL out
     20 NM-Tampa Bay waters-Waters from Bonita Beach to
     Englewood FL out 20 to 60 NM-Waters from Englewood to
     Tarpon Springs FL out 20 to 60 NM-Waters from Tarpon
     Springs to Suwannee River FL out 20 to 60 NM.

     Gale Warning until 1 AM EST Friday for Coastal waters from
     Englewood to Tarpon Springs FL out 20 NM-Coastal waters
     from Tarpon Springs to Suwannee River FL out 20 NM-Tampa
     Bay waters-Waters from Bonita Beach to Englewood FL out 20
     to 60 NM-Waters from Englewood to Tarpon Springs FL out 20
     to 60 NM-Waters from Tarpon Springs to Suwannee River FL
     out 20 to 60 NM.

     Small Craft Advisory until 10 AM EST Friday for Charlotte Harbor
     and Pine Island Sound-Coastal waters from Bonita Beach to
     Englewood FL out 20 NM.

&&

UPDATE/AVIATION/MARINE...24/Hubbard
UPPER AIR...27/Shiveley
DECISION SUPPORT...57/McMichael

Hazardous weather outlook, Feb 6, 6:36 AM EST, 16 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service Tampa Bay Ruskin FL
636 AM EST Thu Feb 6 2020

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-GMZ830-836-850-853-856-870-
873-876-070000-
Sumter-Pinellas-Polk-Hardee-Highlands-DeSoto-Coastal Levy-
Coastal Citrus-Coastal Hernando-Coastal Pasco-
Coastal Hillsborough-Coastal Manatee-Coastal Sarasota-
Coastal Charlotte-Coastal Lee-Inland Levy-Inland Citrus-
Inland Hernando-Inland Pasco-Inland Hillsborough-Inland Manatee-
Inland Sarasota-Inland Charlotte-Inland Lee-Tampa Bay waters-
Charlotte Harbor and Pine Island Sound-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
636 AM EST Thu Feb 6 2020

This Hazardous Weather Outlook is for West Central And Southwest
Florida.

.DAY ONE...Today and Tonight.

...THUNDERSTORM IMPACT...
Thunderstorms are expected this evening through tonight.
Thunderstorms that develop will be capable of producing strong
gusty winds...locally heavy rains... and frequent deadly lightning
strikes.

...HIGH WIND IMPACT...
Strong and gusty winds in the 25 to 30 MPH range will affect the
region today and tonight. These strong winds may break small
twigs from trees and blow around any unsecured outdoor objects.
High profile vehicles should use extra caution especially if
traveling over bridges or high overpasses.

...COASTAL FLOOD IMPACT...
Conditions favorable for coastal flooding are expected to
develop this afternoon and tonight. Coastal residents should be
alert for later statements or warnings...and take action to
protect property.

...RIP CURRENT IMPACT...
High surf will produce rip currents along area beaches today and
Friday.

...MARINE IMPACTS...
Wind speeds of 20 to 40 knots will create hazardous boating
conditions for small craft operators.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

Davis

In the hours before

Local storm report, Feb 6, 6:43 PM EST, 4 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
643 PM EST THU FEB 6 2020

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

0500 PM     NON-TSTM WND GST 3 NNW BELLEAIR          27.98N 82.83W
02/06/2020  M49 MPH          GMZ853             FL   BUOY

            BUOY STATION CWBF1 CLEARWATER BEACH PIER 60.

&&

JCM

Local storm report, Feb 6, 7:12 PM EST, 3 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
712 PM EST THU FEB 6 2020

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

0620 PM     NON-TSTM WND GST 3 W CRYSTAL RIVER       28.90N 82.65W
02/06/2020  M48 MPH          CITRUS             FL   MESONET

            MESONET STATION 0212W 2.9 W CRYSTAL RIVER
            (WEATHERSTEM).

&&

JCM

Local storm report, Feb 6, 7:37 PM EST, 3 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
737 PM EST THU FEB 6 2020

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

0700 PM     NON-TSTM WND DMG 3 SSE INVERNESS         28.80N 82.32W
02/06/2020                   CITRUS             FL   EMERGENCY MNGR

            TREE FELL ON THE BACK OF A HOUSE AND PORCH
            ON LOWDEN STREET IN INVERNESS.

&&

JCM

Local storm report, Feb 6, 9:32 PM EST, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
932 PM EST THU FEB 6 2020

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

0906 PM     TSTM WND GST     1 SSE CEDAR KEY         29.14N 83.03W
02/06/2020  M50 MPH          GMZ850             FL   BUOY

            BUOY STATION CKYF1 CEDAR KEY, FL.

&&

Local storm report, Feb 6, 10:06 PM EST, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
1006 PM EST THU FEB 6 2020

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

0955 PM     TSTM WND GST     2 SSW WILLISTON         29.35N 82.47W
02/06/2020  M55 MPH          LEVY               FL   AWOS

            AWOS STATION KX60 WILLISTON.

&&

Local storm report, Feb 6, 10:11 PM EST, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
1011 PM EST THU FEB 6 2020

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

1000 PM     TSTM WND GST     WILLISTON               29.37N 82.45W
02/06/2020  M61 MPH          LEVY               FL   MESONET

            MESONET STATION 0566W WILLISTON
            (WEATHERSTEM).

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 6, 7:26 PM EST	Special Marine Warning	TBW		94 min
Feb 6, 8:33 PM EST	Severe Thunderstorm Warning	TBW	Levy	57 min
Feb 6, 8:54 PM EST	Special Marine Warning	TBW		2 hr
Feb 6, 9:28 PM EST	Severe Thunderstorm Warning	TBW	Citrus, Levy	47 min
Feb 6, 10:02 PM EST	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Hillsborough, Levy, Pasco, Pinellas and 1 more	58 min
Feb 6, 10:09 PM EST	Special Marine Warning	TBW		96 min
Feb 6, 10:31 PM EST	Tornado Warning	TBW	Pinellas	29 min
Feb 6, 10:51 PM EST	Tornado Warning	TBW	Hillsborough, Pinellas	24 min
Feb 6, 11:13 PM EST	Tornado Warning	TBW	Hillsborough, Manatee	21 min
Feb 6, 11:17 PM EST	Tornado Warning	TBW	Manatee, Sarasota	28 min
Feb 6, 11:37 PM EST	Special Marine Warning	TBW		113 min
Feb 6, 11:44 PM EST	Severe Thunderstorm Warning	TBW	DeSoto, Hardee, Highlands, Hillsborough, Manatee, Polk and 2 more	61 min
Feb 7, 12:47 AM EST	Special Weather Statement	TBW	Charlotte, DeSoto, Hardee, Highlands, Lee	88 min

Nearby

Severe Thunderstorm Warnings in Florida, 2020 Every severe thunderstorm warning in 2020

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.