Alert archive / Mississippi / Special Weather Statements in 2017

Special Weather Statement, NWS New Orleans, LA

March 30, 2017Harrison County, Mississippi

NWS New Orleans, LA issued this special weather statement at Mar 30, 2017, 11:21 AM CDT for Harrison County, Mississippi. It was in force for 39 min. 3 reports 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: Mar 30, 2017, 11:21 AM CDT (16:21 UTC)
Expired: Mar 30, 2017, 12:00 PM CDT
In force: 39 min
Issued by: NWS New Orleans, LA

County Harrison County, MS

The radar

The Mobile radar (KMOB), 67 km from the middle of the area, began a volume at 16:21 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
Mar 30, 11:37 AM CDT	TORNADO	5 Ne Biloxi, MS	TREES REPORTED DOWN RIGHT ALONG HARRISON AND JACKSON COUNTY LINE.
Mar 30, 11:47 AM CDT	TSTM WND DMG	8 Nnw Ocean Springs, MS	THUNDERSTORM WIND GUST...OR POSSIBLE TORNADO...DOWNED A COUPLE OF TREES NEAR THE LATIMER COMMUNITY
Mar 30, 11:52 AM CDT	FUNNEL CLOUD	St. Martin, MS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.4 hours before the alert went out and 81 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: 1425 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 619 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted.

781 
WWUS84 KLIX 301621
SPSLIX

Special Weather Statement
National Weather Service New Orleans LA
1121 AM CDT THU MAR 30 2017

MSZ081-082-301700-
Jackson-Harrison-
1121 AM CDT THU MAR 30 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN HARRISON AND
WESTERN JACKSON COUNTIES...

At 1121 AM CDT, radar indicated strong thunderstorms were located
along a line extending from near McHenry to near Long Beach. Movement
was east at 20 mph.

Winds in excess of 40 mph and dime size hail are possible with these
storms.

Locations impacted include...
Gulfport, Biloxi, Ocean Springs, Long Beach, St. Martin, D'iberville,
Latimer, Gulf Hills, Lyman, Saucier, Gulf Park Estates and Gulfport
Airport.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in New Orleans.

LAT...LON 3037 8877 3038 8885 3038 8877 3041 8884
      3042 8883 3043 8885 3043 8899 3042 8901
      3042 8891 3040 8887 3039 8886 3039 8899
      3034 8918 3068 8912 3068 8889 3074 8888
      3074 8873
TIME...MOT...LOC 1621Z 249DEG 19KT 3072 8904 3031 8911 

$$

MJH

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 29, 10:13 PM CDT	Special Weather Statement	LIX	West Baton Rouge	32 min
Mar 29, 11:05 PM CDT	Areal Flood Advisory	LIX	Pointe Coupee, West Feliciana	115 min
Mar 29, 11:14 PM CDT	Special Weather Statement	LIX	West Feliciana	31 min
Mar 30, 1:06 AM CDT	Areal Flood Advisory	LIX	Pointe Coupee, West Feliciana	3 hr
Mar 30, 3:53 AM CDT	Small Craft Advisory	LIX		16 hr
Mar 30, 5:04 AM CDT	Special Weather Statement	LIX	Washington	26 min
Mar 30, 7:51 AM CDT	Special Weather Statement	LIX	Assumption	54 min
Mar 30, 8:14 AM CDT	Special Weather Statement	LIX	Saint James	46 min
Mar 30, 8:37 AM CDT	Special Marine Warning	LIX		23 min
Mar 30, 8:55 AM CDT	Special Weather Statement	LIX	Lafourche, Orleans, Saint Charles	35 min
Mar 30, 8:58 AM CDT	Special Marine Warning	LIX		62 min
Mar 30, 8:59 AM CDT	Special Marine Warning	LIX		61 min
Mar 30, 9:34 AM CDT	Areal Flood Advisory	LIX	Orleans	116 min
Mar 30, 9:49 AM CDT	Special Marine Warning	LIX		41 min
Mar 30, 9:56 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	34 min
Mar 30, 10:04 AM CDT	Areal Flood Advisory	LIX	Saint Tammany	116 min
Mar 30, 10:25 AM CDT	Special Weather Statement	LIX	Jefferson	35 min
Mar 30, 10:34 AM CDT	Special Marine Warning	LIX		56 min
Mar 30, 10:39 AM CDT	Special Marine Warning	LIX		36 min
Mar 30, 11:17 AM CDT	Special Marine Warning	LIX		28 min
Mar 30, 11:36 AM CDT	Special Marine Warning	LIX		39 min
Mar 30, 11:58 AM CDT	Special Marine Warning	LIX		32 min
Mar 30, 12:07 PM CDT	Special Marine Warning	LIX		23 min
Mar 30, 12:23 PM CDT	Special Marine Warning	LIX		97 min
Mar 30, 12:32 PM CDT	Special Marine Warning	LIX		28 min
Mar 30, 12:35 PM CDT	Special Marine Warning	LIX		25 min
Mar 30, 1:07 PM CDT	Special Marine Warning	LIX		23 min
Mar 30, 1:42 PM CDT	Special Marine Warning	LIX		2 hr
Mar 29, 10:19 PM CDT	Special Weather Statement	LIX	Wilkinson	41 min
Mar 29, 11:51 PM CDT	Special Weather Statement	LIX	Amite	39 min
Mar 30, 4:39 AM CDT	Special Weather Statement	LIX	Walthall	36 min
Mar 30, 5:30 AM CDT	Special Weather Statement	LIX	Pearl River	45 min
Mar 30, 10:13 AM CDT	Severe Thunderstorm Warning	LIX	Hancock	32 min
Mar 30, 10:32 AM CDT	Severe Thunderstorm Warning	LIX	Harrison	43 min
Mar 30, 10:46 AM CDT	Special Weather Statement	LIX	Harrison	29 min
Mar 30, 10:52 AM CDT	Severe Thunderstorm Warning	LIX	Harrison	12 min
Mar 30, 11:42 AM CDT	Tornado Warning Tornado observed	LIX	Harrison, Jackson	33 min
Mar 30, 11:55 AM CDT	Tornado Warning Tornado observed	LIX	Jackson	35 min
Mar 30, 12:26 PM CDT	Severe Thunderstorm Warning	LIX	Jackson	49 min

Nearby

Special Weather Statements in Mississippi, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.