Alert archive / South Dakota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 268, NWS Sioux Falls, SD

June 5, 2004Hanson County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 5, 2004, 6:49 PM CDT for Hanson County, South Dakota. It was in force for 26 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 5, 2004, 6:49 PM CDT (23:49 UTC)
Expired: Jun 5, 2004, 7:15 PM CDT
In force: 26 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

County Hanson County, SD

The radar

The Sioux Falls radar (KFSD), 85 km from the middle of the area, began a volume at 23:49 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.8 hours before the alert went out and 136 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: 81 J/kg
Mixed-layer CIN: -234 J/kg
Mixed-layer LCL: 1334 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KFSD 052349
SVRFSD
SDC061-060015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
649 PM CDT SAT JUN 5 2004

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN HANSON COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 715 PM CDT

* AT 645 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED 8 MILES NORTH OF FULTON...OR ABOUT 12 MILES
  NORTHEAST OF MITCHELL...MOVING SOUTH AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FULTON...FARMER AROUND 700 PM CDT

THIS STORM WILL PRODUCE LARGE HAIL. GO INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS.

LAT...LON 4384 9764 4384 9795 4365 9795 4365 9762

$$

BOUSTEAD

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 5, 2:50 PM CDT, 3 hours 59 minutes earlier.

Area forecast discussion, Jun 5, 2:50 PM CDT, 3 hours 59 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
250 PM CDT SAT JUN 5 2004

.DISCUSSION...

RELATIVE INSTABILITY AXIS NR SFC TROF IN ERN SD ATTM SHOULD BE ABLE
TO SET OFF SCT TSTMS IN NEXT HOUR OR SO AS AIR MASS CONTINUES TO
HEAT OUT. THEN SCT SHWRS/TSTMS SHOULD MOVE OVER SWRN MN AND NWRN IA
THIS EVE AS TROF MOVES E OF AREA. CHC OF ANY SVR SHOULD MAINLY BE
FM BKX TO MML UNDER BTR COLD AIR ALOFT AND BEST CONVERGENCE ALG FNT.
THEN SUBSIDENCE AND WEAK HIGH PRES MOVG ESE OVR CWA REST OF NGT...
AND WITH LINGERING LOW LVL MOISTURE AND GOOD RADIATIONAL COOLING...
WL PUT PATCHY FOG LATE IN ENTIRE CWA. REALLY NICE DAY FOR SUN WITH
RETURN SSELY FLOW SETTING UP AND GOOD MODERATION OF AIR MASS WITH
MID LVL WARM ADVECTION MIXING DOWN AND STG SUN. NOT QUITE AS MUCH
CAPPING EXPCD AS PREV MODELS RUNS FOR SUN NGT INTO EXTD. SO WITH
PROXIMITY OF MID AND LOW LVL BOUNDARY ESP IN NRN CWA...WILL ADD
CHC MAINLY NOCTURNAL TSTMS DURG PERIOD. ALREADY HAVE CHC TSTMS FOR
TUE NGT THRU THU NGT AND WILL KEEP THAT AS DYNAMICS AND TROPICAL
CONNECTION GET BTR WITH APPROACH OF MAIN UPR TROF FM WRN U.S.
ETA SEEMS TO HAVE ITS TYPICAL SOUTH BIAS WITH BOUNDARY...WITH GFS
BTR...BUT A LIT FURTHER S THAN PREV RUNS. WILL HAVE TO WATCH
ENTIRE FCST PERIOD FOR ALL OR NOTHING NOCTURNAL CAP RIDERS. LOW
LVL CONVERGENCE AND INSTABILITY MAY MAKE UP FOR RELATIVE LACK OF
UPPER LVL DYNAMICS... GOOD FOR SOME HEAVY RAIN MCSS. OTRW TYPICAL
SUMMER PATTERN WITH PLENTY OF WARMTH AND HUMIDITY EXPCD...UNTIL
COOL AIR BREAKDOWN BY THE WEEKEND.

&&

.FSD...WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
IA...NONE.
NE...NONE.

&&

RYRHOLM

Hazardous weather outlook, Jun 5, 5:13 PM CDT, 1 hour 36 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE SIOUX FALLS SD
513 PM CDT SAT JUN 05 2004

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-061200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
513 PM CDT SAT JUN 05 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
SCATTERED THUNDERSTORMS WILL CONTINUE OVER SOUTHEAST SOUTH DAKOTA
AND SOUTHWEST MINNESOTA THIS EVENING. DUE TO LIMITED INSTABILITY AND
VERTICAL WIND SHEAR IN THE ATMOSPHERE...WIDESPREAD SEVERE WEATHER IS
NOT EXPECTED. THE STRONGEST STORMS MAY PRODUCE WIND GUSTS TO NEAR 50
MPH...AND HAIL TO THE SIZE OF DIMES. THUNDERSTORMS ARE EXPECTED TO
DIMINISH AFTER 10 PM.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

WARM MOIST AIR WILL BEGIN TO RETURN TO THE NORTHERN PLAINS LATE
SUNDAY AFTERNOON...AND CONTINUE THROUGH THE NIGHT SUNDAY NIGHT. A
FEW THUNDERSTORMS MAY DEVELOP AS THIS WARM MOIST AIR RETURNS TO THE
REGION SUNDAY NIGHT...BUT SEVERE WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.CRH.NOAA.GOV/FSD. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

BOUSTEAD

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 5:56 PM CDT	Severe Thunderstorm Warning	FSD	Miner	34 min
Jun 5, 6:15 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Moody	30 min
Jun 5, 6:42 PM CDT	Severe Thunderstorm Warning	FSD	Miner	33 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2004 Every severe thunderstorm warning in 2004

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.