Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 182, NWS Tallahassee, FL

July 6, 2021Coffee County, Geneva County, Alabama; Holmes County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 6, 2021, 1:17 PM CDT for Coffee County, Geneva County, Alabama; Holmes County, Florida. It was in force for 28 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: Jul 6, 2021, 1:17 PM CDT (18:17 UTC)
Expired: Jul 6, 2021, 1:45 PM CDT
In force: 28 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Coffee County, AL, Geneva County, AL, Holmes County, FL

The radar

The Ft Rucker radar (KEOX), 54 km from the middle of the area, began a volume at 18:17 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
Jul 6, 1:20 PM CDT	TSTM WND DMG	Geneva, AL	TREE DOWN IN GENEVA.

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, 6.3 hours before the alert went out and 178 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: 721 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 780 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

569 
WUUS52 KTAE 061817
SVRTAE
ALC031-061-FLC059-061845-
/O.NEW.KTAE.SV.W.0182.210706T1817Z-210706T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
117 PM CDT Tue Jul 6 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southeastern Coffee County in southeastern Alabama...
  Central Geneva County in southeastern Alabama...
  North central Holmes County in the Panhandle of Florida...

* Until 145 PM CDT.

* At 117 PM CDT, a severe thunderstorm was located over Geneva,
  moving north at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Geneva, Enterprise, Samson, Coffee Springs, Chancellor, Lytle,
  Lucile, Marl, Turner Crossroads, Central City, Geneva Municipal
  A/P, Goodman, Enterprise Municipal A/P, Somerset, Spears, Eunola,
  Sellersville, Highfalls, Sweetgum Head and Cool Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3131 8610 3135 8579 3120 8579 3099 8578
      3096 8598
TIME...MOT...LOC 1817Z 171DEG 22KT 3105 8590 

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

22-BARRY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 12:38 PM CDT	Special Weather Statement	TAE	Geneva	52 min
Jul 6, 1:44 PM CDT	Special Weather Statement	TAE	Dale	46 min
Jul 6, 2:22 PM CDT	Special Weather Statement	TAE	Henry	38 min
Jul 6, 3:42 PM CDT	Areal Flood Advisory	TAE	Henry	2 hr
Jul 6, 1:45 AM CDT	Flood Watch	TAE	Dixie, Jefferson, Lafayette, Madison, Taylor	39 hr
Jul 6, 2:50 AM CDT	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	48 hr
Jul 6, 3:53 AM CDT	Hurricane Watch	TAE	Dixie	9 hr
Jul 6, 10:07 AM CDT	Special Marine Warning	TAE		23 min
Jul 6, 11:46 AM CDT	Special Weather Statement	TAE	Washington	44 min
Jul 6, 1:13 PM CDT	Hurricane Warning	TAE	Dixie	21 hr
Jul 6, 4:36 PM CDT	Special Weather Statement	TAE	Jefferson, Taylor	54 min
Jul 6, 5:04 PM CDT	Special Marine Warning	TAE		56 min
Jul 6, 5:46 PM CDT	Special Weather Statement	TAE	Jefferson	29 min
Jul 6, 6:36 PM CDT	Small Craft Advisory	TAE		18 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Severe Thunderstorm Warnings in Florida, 2021 Every severe thunderstorm warning in 2021

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.