Alert archive / Alabama / Areal Flood Warnings in 2018

Areal Flood Warning 4, NWS Birmingham, AL

May 30, 2018Perry County, Alabama

NWS Birmingham, AL issued this areal flood warning at May 30, 2018, 3:18 PM CDT for Perry County, Alabama. It was in force for 3 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: May 30, 2018, 3:18 PM CDT (20:18 UTC)
Expired: May 30, 2018, 6:15 PM CDT
In force: 3 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

County Perry County, AL

The radar

The Birmingham radar (KBMX), 77 km from the middle of the area, began a volume at 20:20 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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 8.3 hours before the alert went out and 252 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: 1478 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 583 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 areal flood warning went out at May 30, 3:11 PM CDT, 7 minutes earlier.

Area forecast discussion, May 30, 3:11 PM CDT, 7 minutes before

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Hazardous weather outlook, May 30, 4:46 AM CDT, 10 hours 32 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
446 AM CDT Wed May 30 2018

ALZ011>015-017>050-311300-
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-
446 AM CDT Wed May 30 2018

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

.DAY ONE...Today and Tonight.

Areas of showers and thunderstorms are expected again today. Due to
recent heavy rains, isolated locations may experience some flooding,
especially where the grounds are already saturated or are prone to
flooding.

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

A pattern favorable for organized convective systems will develop
across Alabama. There is a low confidence for damaging straight line
winds on Thursday afternoon across the north. Damaging winds are
also possible across Central Alabama on Friday, Saturday, and Sunday.
Heavy rain will continue to be possible with this activity which
could cause localized flooding due to saturated grounds and flood
prone areas.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management may be
necessary Thursday through Sunday.

08

In the hours before

Local storm report, May 30, 11:23 AM CDT, 3 hours 55 minutes before

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Local storm report, May 30, 11:39 AM CDT, 3 hours 39 minutes before

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Local storm report, May 30, 11:44 AM CDT, 3 hours 34 minutes before

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Special weather statement, May 30, 12:47 PM CDT, 2 hours 31 minutes before

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Local storm report, May 30, 1:41 PM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
141 PM CDT WED MAY 30 2018

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

1230 PM     FLASH FLOOD      3 S OAKMULGEE           32.75N 87.04W
05/30/2018                   PERRY              AL   EMERGENCY MNGR

            APPROACH ROAD TO BRIDGE ON MEDLINE ROAD
            WASHED OUT. WATER STILL RISING ON AREA LAKES
            AND STREAMS.

&&

Local storm report, May 30, 2:02 PM CDT, 1 hour 16 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
May 29, 7:40 PM CDT	Areal Flood Advisory	BMX	Dallas, Perry	2 hr
May 29, 8:43 PM CDT	Areal Flood Advisory	BMX	Tallapoosa	2 hr
May 29, 8:55 PM CDT	Areal Flood Advisory	BMX	Autauga, Dallas, Lowndes, Montgomery	2 hr
May 29, 9:46 PM CDT	Areal Flood Advisory	BMX	Autauga, Chilton, Dallas, Marengo, Perry	119 min
May 29, 11:41 PM CDT	Areal Flood Advisory	BMX	Autauga, Chilton, Dallas	6 hr
May 30, 12:27 AM CDT	Areal Flood Advisory	BMX	Lowndes	6 hr
May 30, 12:54 AM CDT	Flash Flood Warning	BMX	Lowndes	6 hr
May 30, 1:10 AM CDT	Flash Flood Warning	BMX	Dallas	6 hr
May 30, 1:37 AM CDT	Flash Flood Warning	BMX	Autauga	6 hr
May 30, 1:46 AM CDT	Areal Flood Advisory	BMX	Coosa, Elmore, Montgomery, Tallapoosa	6 hr
May 30, 2:55 AM CDT	Flash Flood Warning	BMX	Elmore, Montgomery, Tallapoosa	6 hr
May 30, 3:18 AM CDT	Special Weather Statement	BMX	Greene	42 min
May 30, 3:35 AM CDT	Areal Flood Advisory	BMX	Greene, Pickens, Sumter	3 hr
May 30, 3:48 AM CDT	Special Weather Statement	BMX	Tuscaloosa	42 min
May 30, 4:40 AM CDT	Areal Flood Advisory	BMX	Tuscaloosa	3 hr
May 30, 5:01 AM CDT	Flash Flood Warning	BMX	Bibb, Hale, Tuscaloosa	3 hr
May 30, 5:08 AM CDT	Special Weather Statement	BMX	Bibb	52 min
May 30, 5:11 AM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
May 30, 5:18 AM CDT	Flash Flood Watch	BMX	Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 24 more	14 hr
May 30, 5:19 AM CDT	Special Weather Statement	BMX	Hale	41 min
May 30, 6:10 AM CDT	Flash Flood Warning Emergency	BMX	Bibb, Chilton, Perry	9 hr
May 30, 6:27 AM CDT	Special Weather Statement	BMX	Perry	33 min
May 30, 6:55 AM CDT	Flash Flood Warning Emergency	BMX	Greene, Hale, Sumter	9 hr
May 30, 7:24 AM CDT	Special Weather Statement	BMX	Greene	36 min
May 30, 7:44 AM CDT	Flash Flood Warning	BMX	Elmore, Montgomery, Tallapoosa	6 hr
May 30, 7:51 AM CDT	Flash Flood Warning	BMX	Autauga, Dallas, Lowndes, Perry	6 hr
May 30, 8:30 AM CDT	Flash Flood Warning	BMX	Coosa, Tallapoosa	4 hr
May 30, 10:20 AM CDT	Special Weather Statement	BMX	Perry	55 min
May 30, 12:47 PM CDT	Special Weather Statement	BMX	Pike	58 min
May 30, 1:41 PM CDT	Flash Flood Warning	BMX	Autauga, Dallas, Lowndes, Perry	109 min
May 30, 3:23 PM CDT	Areal Flood Warning	BMX	Autauga	3 hr
May 30, 3:44 PM CDT	Special Weather Statement	BMX	Greene	46 min
May 30, 3:54 PM CDT	Special Weather Statement	BMX	Lamar	36 min
May 30, 4:05 PM CDT	Areal Flood Advisory	BMX	Greene	3 hr
May 30, 4:10 PM CDT	Special Weather Statement	BMX	Marion	35 min
May 30, 4:25 PM CDT	Special Weather Statement	BMX	Pickens	35 min
May 30, 4:33 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	42 min
May 30, 4:47 PM CDT	Special Weather Statement	BMX	Lamar, Marion	28 min
May 30, 5:00 PM CDT	Special Weather Statement	BMX	Pickens	30 min
May 30, 5:36 PM CDT	Special Weather Statement	BMX	Greene	39 min
May 30, 5:57 PM CDT	Special Weather Statement	BMX	Pickens	33 min
May 30, 6:39 PM CDT	Special Weather Statement	BMX	Fayette	36 min
May 30, 6:41 PM CDT	Special Weather Statement	BMX	Pickens	49 min

Nearby

Areal Flood Warnings in Alabama, 2018 Every areal flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.