Alert archive / Arkansas / Areal Flood Warnings in 2018

Areal Flood Warning 2, NWS Jackson, MS

February 22, 2018Morehouse Parish, Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this areal flood warning at Feb 22, 2018, 2:10 AM CST for Morehouse Parish, Louisiana; Ashley County, Chicot County, Arkansas. It was in force for 6 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: Feb 22, 2018, 2:10 AM CST (08:10 UTC)
Expired: Feb 22, 2018, 8:00 AM CST
In force: 6 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Ashley County, AR, Chicot County, AR, Morehouse Parish, LA

The radar

The Jackson/Brandon,MS radar (KDGX), 178 km from the middle of the area, began a volume at 08:10 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

Shreveport, LA (KBAD), launched 00:00Z, 8.2 hours before the alert went out and 210 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 323 m²/s²
0-3 km storm-relative helicity: 424 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 Jackson, MS wrote its last area forecast discussion before this areal flood warning went out at Feb 21, 11:38 PM CST, 2 hours 32 minutes earlier.

Area forecast discussion, Feb 21, 11:38 PM CST, 2 hours 32 minutes before

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Hazardous weather outlook, Feb 21, 9:09 PM CST, 5 hours 1 minute before

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In the hours before

Local storm report, Feb 22, 12:31 AM CST, 1 hour 39 minutes before

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Local storm report, Feb 22, 12:41 AM CST, 1 hour 29 minutes before

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Local storm report, Feb 22, 1:14 AM CST, 56 minutes before

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Local storm report, Feb 22, 1:16 AM CST, 54 minutes before

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Local storm report, Feb 22, 1:17 AM CST, 53 minutes before

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Local storm report, Feb 22, 2:06 AM CST, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
206 AM CST THU FEB 22 2018

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

0205 AM     FLASH FLOOD      7 WNW PARKDALE          33.18N 91.65W
02/22/2018                   ASHLEY             AR   DEPT OF HIGHWAYS

            AR HIGHWAY 8 IS CLOSED BETWEEN HAMBURG AND
            PARKDALE DUE TO FLASH FLOODING.

&&

DL

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 21, 6:02 PM CST	Special Weather Statement	JAN	Madison	28 min
Feb 21, 6:25 PM CST	Special Weather Statement	JAN	Madison	35 min
Feb 21, 6:47 PM CST	Special Weather Statement	JAN	Attala	43 min
Feb 21, 7:10 PM CST	Special Weather Statement	JAN	Simpson	50 min
Feb 21, 7:24 PM CST	Tornado Warning	JAN	Jefferson Davis, Lawrence, Simpson	24 min
Feb 21, 9:28 PM CST	Flash Flood Warning	JAN	Bolivar, Sunflower, Washington	6 hr
Feb 22, 2:35 AM CST	Special Weather Statement	JAN	Leflore	85 min
Feb 22, 3:30 AM CST	Flash Flood Warning	JAN	Bolivar, Leflore, Sunflower, Washington	5 hr
Feb 22, 7:19 AM CST	Special Weather Statement	JAN	Webster	26 min
Feb 22, 7:32 AM CST	Flash Flood Warning	JAN	Issaquena, Sharkey, Warren	4 hr
Feb 22, 7:39 AM CST	Flash Flood Warning	JAN	Carroll, Grenada, Holmes, Humphreys, Leflore, Montgomery and 3 more	4 hr
Feb 22, 8:28 AM CST	Areal Flood Warning	JAN	Bolivar, Sunflower, Washington	9 hr
Feb 22, 9:16 AM CST	River Flood Warning	JAN	Carroll, Leflore	18 days
Feb 22, 11:42 AM CST	Areal Flood Warning	JAN	Issaquena, Sharkey	6 hr
Feb 22, 11:57 AM CST	Areal Flood Warning	JAN	Carroll, Grenada, Holmes, Humphreys, Leflore, Montgomery and 2 more	6 hr
Feb 22, 2:37 PM CST	River Flood Warning	JAN	Sharkey	26 days
Feb 22, 5:29 PM CST	Areal Flood Warning	JAN	Washington	16 hr
Feb 21, 8:14 PM CST	Flash Flood Warning	JAN	Morehouse	6 hr
Feb 22, 4:34 AM CST	Flash Flood Warning	JAN	Morehouse	6 hr
Feb 22, 11:09 AM CST	Areal Flood Warning	JAN	Franklin, Madison	6 hr
Feb 22, 12:14 PM CST	River Flood Warning	JAN	Franklin	76 days

Nearby

Areal Flood Warnings in Arkansas, 2018 Areal Flood Warnings in Louisiana, 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.