Alert archive / Florida / Red Flag Warnings in 2020

Red Flag Warning 2, NWS Tampa Bay, FL

March 7, 20207 counties in Florida

NWS Tampa Bay, FL issued this red flag warning at Mar 7, 2020, 4:24 AM EST for 7 counties in Florida. It took effect at Mar 7, 2020, 12:00 PM EST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 7, 2020, 4:24 AM EST (09:24 UTC)
In effect from
Mar 7, 2020, 12:00 PM EST
Expired
Mar 7, 2020, 6:00 PM EST
In force
6 hr
Issued by
NWS Tampa Bay, FL

Counties Charlotte County, FL, Hillsborough County, FL, Lee County, FL, Manatee County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 38 km from the middle of the area, began a volume at 09:22 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 nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 9.4 hours before the alert went out and 38 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-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 2020-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2020-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -135 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1470 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-135 m²/s²
0-3 km storm-relative helicity
-67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

598 
WWUS82 KTBW 070924
RFWTBW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Tampa Bay Area - Ruskin FL
424 AM EST Sat Mar 7 2020

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS 
EVENING FOR LONG DURATIONS OF LOW HUMIDITIES ALONG WITH DRY SOILS
AND WINDS GREATER THAN 15 MPH...

.Dry air in place across the area will allow for several hours of
relative humidity values below 35 percent this afternoon. In
addition, dry soil conditions and winds greater than 15 mph will
cause dangerous fire weather conditions. 

FLZ050-151-155-160-162-165-072300-
/O.NEW.KTBW.FW.W.0002.200307T1700Z-200307T2300Z/
Pinellas-Coastal Hillsborough-Coastal Manatee-Coastal Sarasota-
Coastal Charlotte-Coastal Lee-
424 AM EST Sat Mar 7 2020

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS
EVENING FOR LONG DURATIONS OF LOW HUMIDITIES ALONG WITH DRY SOILS
AND WINDS GREATER THAN 15 MPH...

The National Weather Service in Tampa Bay Area - Ruskin FL has
issued a Red Flag Warning, which is in effect from noon today to
6 PM EST this evening. 

* AFFECTED AREA...Pinellas...Coastal Hillsborough...Coastal 
  Manatee...Coastal Sarasota...Coastal Charlotte...Coastal Lee. 

* WIND...Northeast winds around 15 mph with gusts to 25 mph.  

* HUMIDITY...29 to 34 percent.

* ERC...30 to 40.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$
1 follow-up statement
504 
WWUS82 KTBW 071353
RFWTBW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Tampa Bay Area - Ruskin FL
853 AM EST Sat Mar 7 2020

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS
EVENING FOR LONG DURATIONS OF LOW HUMIDITIES ALONG WITH DRY SOILS
AND WINDS GREATER THAN 15 MPH...

.Dry air in place across the area will allow for several hours of
relative humidity values below 35 percent this afternoon. In
addition, dry soil conditions and winds greater than 15 mph will
cause dangerous fire weather conditions.

FLZ052-072300-
/O.EXA.KTBW.FW.W.0002.200307T1700Z-200307T2300Z/
Polk-
853 AM EST Sat Mar 7 2020

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS
EVENING FOR  LONG DURATIONS OF LOW HUMIDITIES ALONG WITH DRY SOILS
AND WINDS GREATER THAN 15 MPH...

The National Weather Service in Tampa Bay Area - Ruskin FL has
issued a Red Flag Warning, which is in effect from noon today to
6 PM EST this evening. 

* AFFECTED AREA...Polk.

* WIND...Northeast winds around 15 mph with gusts to 25 mph.

* HUMIDITY...29 to 34 percent.

* ERC...30 to 40.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

FLZ050-151-155-160-162-165-072300-
/O.CON.KTBW.FW.W.0002.200307T1700Z-200307T2300Z/
Pinellas-Coastal Hillsborough-Coastal Manatee-Coastal Sarasota-
Coastal Charlotte-Coastal Lee-
853 AM EST Sat Mar 7 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 PM EST
THIS EVENING FOR LONG DURATIONS OF LOW HUMIDITIES ALONG WITH DRY SOILS
AND WINDS GREATER THAN 15 MPH...

* AFFECTED AREA...Pinellas...Coastal Hillsborough...Coastal 
  Manatee...Coastal Sarasota...Coastal Charlotte...Coastal Lee. 

* WIND...Northeast winds around 15 mph with gusts to 25 mph.

* HUMIDITY...29 to 34 percent.

* ERC...30 to 40.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

What forecasters said that day

The local office's own words before this red flag 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 red flag warning went out at Mar 7, 4:09 AM EST, 15 minutes earlier.

Area forecast discussion, Mar 7, 4:09 AM EST, 15 minutes before
Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
409 AM EST Sat Mar 7 2020

.SHORT TERM (Today-Sunday)...
Cooler and drier air is in place across the area this morning,
with an interesting pocket of very low dew points around TPA/MCF
and even extending down across the office. Highs today only
reaching into the mid 60s to around 70, with several hours of
humidities below 35 percent this afternoon. Winds will be turning
from the north to the NE this afternoon as high pressure settles
east into the SE US. The high center continue to shift SE tonight
and Sunday turning winds more easterly and allowing for some
moderation of temps and moisture. Lows tonight are expected around
40 north and in the mid 40s to lower 50s central and south. Highs
Sunday in the lower to mid 70s.

.LONG TERM (Sunday night - Friday)...
Mid level ridging will build over the Gulf and Florida through the
upcoming week in response to a deep cutoff upper-level low
approaching and moving onshore the southern California coast by
mid week. At the surface strong high pressure (1036MB) initially
moving offshore the mid Atlantic coast Sunday night will move
eastward into the Atlantic and extend back to the west across the
northern Florida peninsula through the period with a return east-
southeast wind flow developing across the forecast area.
Dry/stable conditions under the ridge will keep rain chances out
of the forecast as the ridging keeps storm systems and fronts at
bay well to the north of the area, with a slow increase in low
level moisture and warming temperatures expected. Near normal
temperatures on Monday will climb to above normal Tuesday through
Friday with overnight lows warming into the 50s and 60s, with
daytime highs climbing into the upper 70s to around 80 on Monday,
then reaching the lower to mid 80s Tuesday through Friday.

&&

.AVIATION...
VFR conditions through the period with clear skies. Winds will be
from the N/NE increasing in the afternoon.

&&

.MARINE...
SCA continues for the coastal waters through this afternoon, then
should be subsiding. High pressure will remain in place across the
waters through the week, with the high center shifting east of the
area today.

&&

.FIRE WEATHER...
Several hours of critical RH values across the area this
afternoon, but winds should remain below 15 mph except right along
the coast. Most ERC values are in the 30s, so with that, will be
raising a red flag warning for the coastal counties from Pinellas
south through Lee.

&&

.Preliminary Point Temps/PoPs...
TPA  67  49  73  56 /   0   0   0   0
FMY  70  51  75  55 /   0   0   0   0
GIF  68  48  73  55 /   0   0   0   0
SRQ  70  47  76  55 /   0   0   0   0
BKV  66  41  74  49 /   0   0   0   0
SPG  68  54  72  60 /   0   0   0   0

&&

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

     Red Flag Warning from noon today to 6 PM EST this evening for
     Coastal Charlotte-Coastal Hillsborough-Coastal Lee-Coastal
     Manatee-Coastal Sarasota-Pinellas.

Gulf waters...Small Craft Advisory until 3 PM EST this afternoon for Coastal
     waters from Bonita Beach to Englewood FL out 20 NM-Coastal
     waters from Englewood to Tarpon Springs FL out 20 NM-
     Coastal waters from Tarpon Springs to Suwannee River FL out
     20 NM-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.

&&

SHORT TERM/AVIATION/MARINE/FIRE WEATHER...24/Hubbard
MID TERM/LONG TERM/DECISION SUPPORT...57/McMichael

Nearby

Red Flag Warnings in Florida, 2020Every red flag 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.