SPC – No MDs are in effect as of Mon Mar 20 13:57:01 UTC 2023
No Mesoscale Discussions are in effect as of Mon Mar 20 13:57:01 UTC 2023.
SPC Mar 20, 2023 1300 UTC Day 1 Convective Outlook
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0741 AM CDT Mon Mar 20 2023 Valid 201300Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected today. ...Synopsis/Discussion... In mid/upper levels, a zonal to broadly cyclonic pattern exists across the CONUS, perturbed mainly by shortwave troughs over the southern Appalachians and coastal OR/northwestern CA. The eastern trough will deamplify and move northeastward off the Mid-Atlantic Coast around 00Z, while the western one also weakens, and moves inland to southern ID and northern NV. Well offshore, a cyclone is apparent in moisture-channel imagery between 130W-140W and 40N-50N. This vortex will dig southeastward, expand and intensify, while approaching (but remaining offshore from) the CA Coast by the end of the period. Downstream from that cyclone, a series of small shortwaves and vorticity maxima will traverse a lengthy fetch of broadly difluent flow. Associated cooling aloft and at least marginally suitable low/middle-level moisture above the boundary layer will contribute to isolated, episodic thunder potential over the Intermountain West through tonight. Low-level lee troughing and cyclogenesis are expected to continue just east of the central/southern Rockies, with a surface low moving eastward out of CO toward the GLD/MCK/IML region by 12Z. One of those mid/upper perturbations -- initially just off south- central CA, will move rapidly eastward. This feature should cross northern NM around 06Z and reach parts of southwestern KS, northwestern OK and the TX/OK Panhandles by 12Z. Associated lift and steepening of midlevel lapse rates, atop greater low/middle- level moisture and lapse rates within a strengthening warm-advection regime, will cause up to about 300 J/kg elevated MUCAPE to develop in parts of central/eastern KS/OK. Forecast soundings suggest the buoyancy, though meager and rooted between 700-850 mb, can extend into icing layers favorable for lightning production. As such, at least isolated thunderstorms should develop within a broader area of showers overnight, especially after 06Z. Moisture and instability should be too weak for severe potential, however. ..Edwards/Broyles.. 03/20/2023Read more
Severe Thunderstorm Warning
This is an automatic message WUUS52 KGSP 150312
SVRGSP
NCC045-071-109-SCC021-091-150400-
/O.NEW.KGSP.SV.W.0024.190415T0312Z-190415T0400Z/
BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
1112 PM EDT Sun Apr 14 2019
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for…
Eastern Lincoln County in the Piedmont of North Carolina…
Southeastern Cleveland County in the Piedmont of North Carolina…
Gaston County in the Piedmont of North Carolina…
Northwestern York County in Upstate South Carolina…
Northeastern Cherokee County in Upstate South Carolina…
* Until midnight EDT.
* At 1112 PM EDT, severe thunderstorms were located along a line
extending from near Shelby to 19 miles west of Gastonia to 6 miles
east of Gaffney, moving east at 35 mph.
HAZARD…60 mph wind gusts.
SOURCE…Radar indicated.
IMPACT…Expect damage to trees and power lines.
* Locations impacted include…
Gastonia, Shelby, Kings Mountain, Mt Holly, Belmont, Cherryville,
Bessemer City, South Gastonia, Clover and Dallas.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.
These storms are also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.
Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.
&&
A Tornado Watch remains in effect until 500 AM EDT for the Piedmont
of North Carolina…and Upstate South Carolina.
LAT…LON 3535 8097 3530 8100 3527 8102 3517 8100
3515 8101 3514 8105 3510 8103 3509 8106
3495 8165 3515 8157 3530 8163 3555 8106
3555 8096 3550 8096 3549 8095 3545 8094
3543 8096 3539 8095 3537 8099 3536 8092
TIME…MOT…LOC 0312Z 248DEG 32KT 3526 8153 3518 8150 3504 8155
TORNADO…POSSIBLE
HAIL…<.75IN
WIND...60MPH
$$
HG
Severe Thunderstorm Warning
This is an automatic message WUUS52 KGSP 150215
SVRGSP
SCC045-059-083-150300-
/O.NEW.KGSP.SV.W.0022.190415T0215Z-190415T0300Z/
BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
1015 PM EDT Sun Apr 14 2019
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for…
Northwestern Laurens County in Upstate South Carolina…
East central Greenville County in Upstate South Carolina…
Central Spartanburg County in Upstate South Carolina…
* Until 1100 PM EDT.
* At 1015 PM EDT, a severe thunderstorm was located 14 miles
southeast of Greenville Downtown, or 4 miles southeast of Five
Forks, moving east at 40 mph.
HAZARD…60 mph wind gusts.
SOURCE…Radar indicated.
IMPACT…Expect damage to trees and power lines.
* Locations impacted include…
Spartanburg, Simpsonville, Five Forks, Fountain Inn, Woodruff,
Pacolet, Cowpens, Roebuck, Pacolet Mills and Reidville.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.
This storm is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.
Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.
&&
A Tornado Watch remains in effect until 500 AM EDT for Upstate South
Carolina.
LAT…LON 3463 8224 3482 8228 3503 8180 3499 8177
3493 8176 3493 8174 3491 8172 3483 8179
3461 8185
TIME…MOT…LOC 0215Z 250DEG 35KT 3476 8216
TORNADO…POSSIBLE
HAIL…<.75IN
WIND...60MPH
$$
HG
Tornado Warning
This is an automatic message WFUS52 KGSP 150116
TORGSP
SCC007-150145-
/O.NEW.KGSP.TO.W.0010.190415T0116Z-190415T0145Z/
BULLETIN – EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
916 PM EDT Sun Apr 14 2019
The National Weather Service in Greenville-Spartanburg has issued a
* Tornado Warning for…
Central Anderson County in Upstate South Carolina…
* Until 945 PM EDT.
* At 916 PM EDT, a severe thunderstorm capable of producing a tornado
was located 10 miles southwest of Anderson, or near Lake Hartwell,
moving northeast at 35 mph.
HAZARD…Tornado.
SOURCE…Radar indicated rotation.
IMPACT…Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near…
Anderson, Northlake, Anderson Airport and Homeland Park around 930
PM EDT.
Belton around 940 PM EDT.
Other locations impacted by this dangerous thunderstorm include Sandy
Springs, Sadlers Creek State Park and Broadway Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.
&&
LAT…LON 3437 8284 3444 8286 3447 8287 3449 8291
3448 8292 3449 8293 3475 8252 3467 8246
3462 8245 3459 8242 3456 8242 3454 8239
3451 8237 3435 8281
TIME…MOT…LOC 0116Z 238DEG 31KT 3446 8281
TORNADO…RADAR INDICATED
HAIL…<.75IN
$$
HG