Alert archive / Florida / Extreme Wind Warnings in 2018

Extreme Wind Warning 1, NWS Tallahassee, FL

October 10, 2018Bay County, Franklin County, Gulf County, Florida

NWS Tallahassee, FL issued this extreme wind warning at Oct 10, 2018, 10:11 AM CDT for Bay County, Franklin County, Gulf County, Florida. It was in force for 3 hr. 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: Oct 10, 2018, 10:11 AM CDT (15:11 UTC)
Expired: Oct 10, 2018, 1:15 PM CDT
In force: 3 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Bay County, FL, Franklin County, FL, Gulf County, FL

The radar

The Eglin Afb radar (KEVX), 97 km from the middle of the area, began a volume at 15:11 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
Oct 10, 12:08 PM CDT	NON-TSTM WND GST 119	Tyndall Afb, FL	AWOS STATION PAM, TYNDALL AFB REPORTS SUSTAINED WINDS OF 82 MPH GUSTS TO 119 MPH.

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

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.2 hours before the alert went out and 123 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: 227 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 299 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

031 
WFUS52 KTAE 101511
EWWTAE
FLC005-037-045-101815-
/O.NEW.KTAE.EW.W.0001.181010T1511Z-181010T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
Extreme Wind Warning
National Weather Service Tallahassee FL
1111 AM EDT WED OCT 10 2018

The National Weather Service in Tallahassee has issued a

* Extreme Wind Warning for...
  Gulf County in the Panhandle of Florida...
  Southern Bay County in the Panhandle of Florida...
  Southwestern Franklin County in Big Bend of Florida...

* Until 215 PM EDT/115 PM CDT/.

* At 1109 AM EDT/1009 AM CDT/, National Weather Service Doppler 
  radar indicated extreme winds in excess of 130 mph, associated 
  with the eyewall of Hurricane Michael, were moving onshore. THIS 
  IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Treat these imminent extreme winds as if a tornado
was approaching and move immediately to the safe room in your
shelter. Take action now to protect your life!

&&

A Tornado Watch remains in effect until 500 PM EDT/400 PM CDT/ for
Big Bend of and the Panhandle of Florida.

LAT...LON 2960 8524 2960 8540 2975 8549 2988 8549
      3017 8597 3031 8592 3013 8523 2963 8479
      2953 8510
TIME...MOT...LOC 1509Z 219DEG 14KT 2948 8588 

$$

42-DVD

What forecasters said that day

The local office's own words before this extreme wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this extreme wind warning went out at Oct 10, 5:53 AM CDT, 4 hours 18 minutes earlier.

Area forecast discussion, Oct 10, 5:53 AM CDT, 4 hours 18 minutes before

Area Forecast Discussion
National Weather Service Tallahassee FL
653 AM EDT Wed Oct 10 2018

.AVIATION [Through 12Z Thursday]...

Conditions will continue to deteriorate from south to north
across area terminals this morning into the afternoon as
Hurricane Michael moves closer and eventually inland across the
Florida panhandle. Winds will increase with lowering ceilings as
bands of convection move through the region. We will see gradual
improvement late tonight into Thursday morning.

&&

.PREV DISCUSSION [439 AM EDT]...

.NEAR TERM [Today through Tonight]...

Key Points...

1. Hurricane Michael is expected to make landfall as a Category 4
Hurricane along the Florida Panhandle or western Big Bend today as a
storm of unprecedented strength for this area. Conditions will
continue deteriorating through this afternoon and evening.

2. The greatest threats include the danger of life threatening storm
surge along the Florida Panhandle and Big Bend coastlines and
damaging winds that will result in widespread power outages that may
last days to even more than a week in some areas. In addition,
river flooding and flash flooding and a few tornadoes are expected.

3. The time to prepare is ending. Be prepared to shelter in place
for a long duration of time. As winds increase or a Tornado Warning
is issued be prepared to get to a small interior room away from
outside walls.

Today and tonight is when the greatest, catastrophic impacts from
Hurricane Michael will be felt across the area. Michael is forecast
to be a category 4 hurricane when it makes landfall along the
Florida Panhandle or western Big Bend this afternoon. Based on
historical data, a hurricane of this strength has NEVER made
landfall in this region and thus this is an event that will have
unprecedented impacts. Bands from Hurricane Michael are already
moving onshore. Be prepared for tornadoes in these
 and have a safe interior room to go when when either a Tornado
Warning is issued or the devestating winds from Michael move
onshore.

Life threatening storm surge, downed trees and power lines causing
widespread and long lasting power outages, structural damage impacting
homes and businesses, river flooding and flash flooding, and a few
tornadoes are all expected.

.SHORT TERM [Thursday Through Friday]...

In the wake of the departing hurricane, Thursday will be hot and
very humid with heat indices approaching 100 degrees, especially
over the Florida zones. This will be very uncomfortable
particularly for those residents who are without power due to
Hurricane Michael. Some relief will arrive Thursday night and
Friday as a the first cold front of this fall season sweeps
through the region. Highs on Thursday will be in the mid 80s to
around 90 with highs on Friday ranging from the upper 70s
northwest to mid 80s southeast. Lows Thursday night will range
from the mid 50s northwest to mid 60s southeast.

.LONG TERM [Friday Night Through Wednesday]...

A dry stretch of weather with seasonal temperatures for mid
October is forecast to continue at least through the weekend. For
Monday through Tuesday, a complex pattern sets up which leads to
uncertainty in the sensible weather details. The area will reside
between a cold front approaching from the west, high pressure
nosing down the eastern seaboard, and greater subtropical moisture
to the east. This leads to the potential for increased shower
activity during this period.

.MARINE...

Hurricane Michael is expected to have a major impact on the area.
Hurricane conditions are expected with the worst conditions today
and tonight.

.FIRE WEATHER...

Aside from high dispersion values today, there are no other fire
weather concerns.

.HYDROLOGY...

Given the track and intensity of Hurricane Michael, widespread rainfall
totals of 4 to 8 inches with isolated 12 inch amounts are
possible. The highest of these totals will be in the Florida
panhandle and western Big Bend counties along and to the east of
the track of Michael. These rainfall amounts will result in flash
flooding.

At this time, flood warnings are in effect for portions of the Chipola,
Choctawhatchee, Ochlockonee, and St. Marks Rivers. Despite
current river conditions below normal levels, with the forecast
rainfall, expect additional river basins to rise above flood
stage.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is requested. Spotters should safely report
significant weather conditions and/or damage by calling the office or
tweeting us @NWSTallahassee.

&&

.PRELIMINARY POINT TEMPS/POPS...

Tallahassee   79  76  89  59  82 / 100 100  20  10   0
Panama City   79  74  89  61  81 / 100  70  20  10   0
Dothan        78  73  86  54  78 / 100 100  20   0   0
Albany        83  73  87  55  79 / 100 100  50  10   0
Valdosta      84  76  88  60  82 /  90 100  30  10   0
Cross City    83  78  90  65  86 /  90  90  20  10   0
Apalachicola  81  77  87  64  81 / 100  70  20  10   0

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
FL...Hurricane Warning for Calhoun-Central Walton-Coastal Bay-Coastal
     Dixie-Coastal Franklin-Coastal Gulf-Coastal Jefferson-
     Coastal Taylor-Coastal Wakulla-Gadsden-Holmes-Inland Bay-
     Inland Franklin-Inland Gulf-Inland Jefferson-Inland Wakulla-
     Jackson-Leon-Liberty-North Walton-South Walton-Washington.

     Flash Flood Watch through Thursday morning for Calhoun-Central
     Walton-Coastal Bay-Coastal Franklin-Coastal Gulf-Coastal
     Jefferson-Coastal Wakulla-Gadsden-Holmes-Inland Bay-Inland
     Franklin-Inland Gulf-Inland Jefferson-Inland Wakulla-
     Jackson-Leon-Liberty-North Walton-South Walton-Washington.

     Tropical Storm Warning for Inland Dixie-Inland Taylor-Lafayette-
     Madison.

     High Rip Current Risk through late Thursday night for Coastal
     Bay-Coastal Franklin-Coastal Gulf-South Walton.

     High Surf Warning until 2 AM EDT /1 AM CDT/ Thursday for Coastal
     Bay-Coastal Franklin-Coastal Gulf-South Walton.

GA...Hurricane Warning for Baker-Brooks-Calhoun-Clay-Colquitt-Decatur-
     Dougherty-Early-Grady-Lee-Miller-Mitchell-Quitman-Randolph-
     Seminole-Terrell-Thomas-Tift-Turner-Worth.

     Flash Flood Watch through Thursday morning for Baker-Ben Hill-
     Berrien-Brooks-Calhoun-Clay-Colquitt-Cook-Decatur-Dougherty-
     Early-Grady-Irwin-Lee-Miller-Mitchell-Quitman-Randolph-
     Seminole-Terrell-Thomas-Tift-Turner-Worth.

     Tropical Storm Warning for Ben Hill-Berrien-Cook-Irwin-Lanier-
     Lowndes.

AL...Hurricane Warning for Dale-Geneva-Henry-Houston.

     Flash Flood Watch through Thursday morning for Coffee-Dale-
     Geneva-Henry-Houston.

     Tropical Storm Warning for Coffee.

GM...Hurricane Warning for Apalachee Bay or Coastal Waters From
     Keaton Beach to Ochlockonee River FL out to 20 Nm-Coastal
     Waters From Ochlockonee River to Apalachicola Fl out to 20
     Nm-Coastal waters from Suwannee River to Keaton Beach FL
     out 20 NM-Coastal waters from Mexico Beach to Apalachicola
     FL out 20 NM-Coastal waters from Mexico Beach to Okaloosa
     Walton County Line FL out 20 NM-Waters from Suwannee River
     to Apalachicola FL from 20 to 60 NM-Waters from
     Apalachicola to Mexico Beach FL from 20 to 60 NM-Waters
     from Mexico Beach to Okaloosa Walton County Line FL from 20
     to 60 NM.

&&

NEAR TERM...LF
SHORT TERM...Barry
LONG TERM...Barry
AVIATION...Barry
MARINE...Barry
FIRE WEATHER...Barry
HYDROLOGY...LF

In the hours before

Local storm report, Oct 10, 6:54 AM CDT, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
754 AM EDT WED OCT 10 2018

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

0718 AM     STORM SURGE      APALACHICOLA            29.73N 84.98W
10/10/2018                   FRANKLIN           FL   OTHER FEDERAL

            STATION APCF1, APALACHICOLA HAS REPORTED
            4.01 FT MHHW.

&&

RH

Local storm report, Oct 10, 7:26 AM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
826 AM EDT WED OCT 10 2018

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

0700 AM     HURRICANE        18 S SAINT GEORGE ISLAN 29.41N 84.86W
10/10/2018                   GMZ755             FL   OTHER FEDERAL

            STATION SGOF1, 18 S SAINT GEORGE ISLAND
            REPORTED GUST TO 62 MPH.

&&

RH

Local storm report, Oct 10, 9:42 AM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1042 AM EDT WED OCT 10 2018

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

1018 AM     HURRICANE        2 NNW SAINT GEORGE ISLA 29.69N 84.88W
10/10/2018                   GMZ755             FL   MESONET

            ST GEORGE ISLAND BRIDGE REPORTS SUSTAINED
            WINDS OF 63 MPH AND GUSTS TO 71 MPH.

&&

RH

Local storm report, Oct 10, 9:59 AM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1059 AM EDT WED OCT 10 2018

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

1057 AM     HURRICANE        1 NNW SAINT GEORGE ISLA 29.68N 84.87W
10/10/2018                   GMZ755             FL   MESONET

            ST GEORGE ISLAND BRIDGE REPORTS GUST TO 75
            MPH.

&&

RH

Local storm report, Oct 10, 10:08 AM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1108 AM EDT WED OCT 10 2018

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

1047 AM     HURRICANE        2 SSE LAKE JACKSON      30.50N 84.32W
10/10/2018                   LEON               FL   UTILITY COMPANY

            POWER LINE REPORTED DOWN NEAR CROWDER LOOP.

&&

RH

Local storm report, Oct 10, 10:10 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1110 AM EDT WED OCT 10 2018

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

1049 AM     HURRICANE        TALLAHASSEE MEMORIAL HO 30.46N 84.27W
10/10/2018                   LEON               FL   PUBLIC

            TREE REPORTED DOWN ON E 6TH AVE AND TERRACE
            ST.

&&

RH

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 1:17 AM CDT	River Flood Warning	TAE	Walton, Washington	4 days
Oct 10, 1:25 AM CDT	River Flood Warning	TAE	Dixie, Levy	20 hr
Oct 10, 5:38 AM CDT	Special Marine Warning	TAE		37 min
Oct 10, 12:15 PM CDT	Extreme Wind Warning	TAE	Bay, Calhoun, Gulf, Jackson, Liberty, Washington	3 hr
Oct 10, 2:09 PM CDT	Extreme Wind Warning	TAE	Gadsden, Holmes, Jackson, Washington	96 min
Oct 10, 2:55 PM CDT	Flash Flood Warning	TAE	Bay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 6 more	6 hr
Oct 10, 3:40 PM CDT	Extreme Wind Warning	TAE	Jackson	110 min
Oct 10, 5:34 PM CDT	River Flood Warning	TAE	Jackson	4 days
Oct 10, 5:36 PM CDT	River Flood Warning	TAE	Calhoun, Franklin, Gulf, Liberty	51 hr

Nearby

Extreme Wind Warnings in Florida, 2018 Every extreme wind warning in 2018

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.