Alert archive / Alabama / Special Weather Statements in 2018

Special Weather Statement, NWS Birmingham, AL

June 30, 2018Chilton County, Alabama

NWS Birmingham, AL issued this special weather statement at Jun 30, 2018, 3:39 PM CDT for Chilton County, Alabama. It was in force for 36 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: Jun 30, 2018, 3:39 PM CDT (20:39 UTC)
Expired: Jun 30, 2018, 4:15 PM CDT
In force: 36 min
Issued by: NWS Birmingham, AL

County Chilton County, AL

The radar

The Birmingham radar (KBMX), 50 km from the middle of the area, began a volume at 20:40 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, 8.7 hours before the alert went out and 50 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: 1191 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1113 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 20 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 Jun 30, 1:27 PM CDT, 2 hours 12 minutes earlier.

Area forecast discussion, Jun 30, 1:27 PM CDT, 2 hours 12 minutes before

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Hazardous weather outlook, Jun 30, 3:24 AM CDT, 12 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
324 AM CDT Sat Jun 30 2018

ALZ011>015-017>050-011130-
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-
324 AM CDT Sat Jun 30 2018

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

.DAY ONE...through Tonight.

Heat indices will climb to near 105 degrees this afternoon in the
western third of Central Alabama. This will mainly affect areas
along and west of a Fayette to Demopolis line. Confidence remains
low that the values be reach for any prolonged period.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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, Jun 30, 2:37 PM CDT, 1 hour 2 minutes before

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Special weather statement, Jun 30, 2:38 PM CDT, 1 hour 1 minute before

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Special weather statement, Jun 30, 2:49 PM CDT, 50 minutes before

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Special weather statement, Jun 30, 2:56 PM CDT, 43 minutes before

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Special weather statement, Jun 30, 3:13 PM CDT, 26 minutes before

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Special weather statement, Jun 30, 3:39 PM 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
Jun 30, 11:10 AM CDT	Special Weather Statement	BMX	Pike	35 min
Jun 30, 12:06 PM CDT	Special Weather Statement	BMX	Lowndes	24 min
Jun 30, 12:24 PM CDT	Special Weather Statement	BMX	Lowndes	36 min
Jun 30, 1:16 PM CDT	Special Weather Statement	BMX	Macon	29 min
Jun 30, 1:32 PM CDT	Special Weather Statement	BMX	Russell	28 min
Jun 30, 1:39 PM CDT	Special Weather Statement	BMX	Macon	36 min
Jun 30, 1:48 PM CDT	Special Weather Statement	BMX	Elmore	27 min
Jun 30, 2:02 PM CDT	Special Weather Statement	BMX	Barbour	28 min
Jun 30, 2:07 PM CDT	Special Weather Statement	BMX	Elmore	38 min
Jun 30, 2:37 PM CDT	Special Weather Statement	BMX	Barbour	23 min
Jun 30, 2:38 PM CDT	Special Weather Statement	BMX	Montgomery	37 min
Jun 30, 2:49 PM CDT	Special Weather Statement	BMX	Montgomery	26 min
Jun 30, 2:56 PM CDT	Special Weather Statement	BMX	Dallas	34 min
Jun 30, 3:13 PM CDT	Special Weather Statement	BMX	Montgomery	32 min
Jun 30, 4:01 PM CDT	Special Weather Statement	BMX	Autauga	29 min
Jun 30, 4:21 PM CDT	Special Weather Statement	BMX	Chambers	24 min
Jun 30, 4:27 PM CDT	Special Weather Statement	BMX	Autauga	33 min
Jun 30, 4:44 PM CDT	Special Weather Statement	BMX	Bibb	31 min
Jun 30, 4:47 PM CDT	Special Weather Statement	BMX	Chambers	28 min
Jun 30, 4:54 PM CDT	Special Weather Statement	BMX	Marengo	36 min
Jun 30, 5:07 PM CDT	Special Weather Statement	BMX	Bibb	23 min
Jun 30, 5:28 PM CDT	Special Weather Statement	BMX	Marengo	47 min
Jun 30, 5:55 PM CDT	Special Weather Statement	BMX	Greene	50 min
Jun 30, 6:17 PM CDT	Flash Flood Warning	BMX	Marengo	89 min

Nearby

Special Weather Statements in Alabama, 2018 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.