Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Birmingham, AL

July 5, 2017Etowah County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 5, 2017, 11:48 AM CDT for Etowah County, Alabama. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 5, 2017, 11:48 AM CDT (16:48 UTC)
Expired: Jul 5, 2017, 12:30 PM CDT
In force: 42 min
Issued by: NWS Birmingham, AL

County Etowah County, AL

The radar

The Northeast Alabama radar (KHTX), 106 km from the middle of the area, began a volume at 16:52 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.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.8 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: 1874 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 845 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

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

NWS Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Jul 5, 8:12 AM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Jul 5, 8:12 AM CDT, 3 hours 36 minutes before

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Hazardous weather outlook, Jul 5, 3:39 AM CDT, 8 hours 9 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
339 AM CDT Wed Jul 5 2017

ALZ011>015-017>050-061145-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
339 AM CDT Wed Jul 5 2017

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...Outlook through Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management is not
expected at this time.

In the hours before

Special weather statement, Jul 5, 10:50 AM CDT, 58 minutes before

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Special weather statement, Jul 5, 11:22 AM CDT, 26 minutes before

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Special weather statement, Jul 5, 11:48 AM CDT, 0 minutes before

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The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 10:50 AM CDT	Special Weather Statement	BMX	Etowah	55 min
Jul 5, 11:22 AM CDT	Special Weather Statement	BMX	Cherokee	68 min
Jul 5, 11:59 AM CDT	Special Weather Statement	BMX	Winston	46 min
Jul 5, 1:03 PM CDT	Special Weather Statement	BMX	Jefferson	42 min
Jul 5, 1:55 PM CDT	Special Weather Statement	BMX	Blount, Etowah, St. Clair	35 min
Jul 5, 2:30 PM CDT	Special Weather Statement	BMX	Etowah	45 min
Jul 5, 2:43 PM CDT	Special Weather Statement	BMX	Walker	47 min
Jul 5, 2:57 PM CDT	Special Weather Statement	BMX	Jefferson	48 min
Jul 5, 3:02 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	22 min
Jul 5, 3:07 PM CDT	Special Weather Statement	BMX	Calhoun, Cherokee	53 min
Jul 5, 3:45 PM CDT	Special Weather Statement	BMX	Jefferson	30 min
Jul 5, 3:48 PM CDT	Special Weather Statement	BMX	St. Clair	42 min
Jul 5, 4:41 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Shelby	34 min
Jul 5, 5:02 PM CDT	Areal Flood Advisory	BMX	Jefferson, St. Clair, Shelby	3 hr
Jul 5, 5:13 PM CDT	Special Weather Statement	BMX	Talladega	47 min
Jul 5, 5:55 PM CDT	Special Weather Statement	BMX	Talladega	50 min
Jul 5, 6:22 PM CDT	Special Weather Statement	BMX	Clay	53 min

Nearby

Special Weather Statements in Alabama, 2017 Every special weather statement in 2017

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.