Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 79, NWS Rapid City, SD

July 23, 2002Lawrence County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jul 23, 2002, 9:07 PM MDT for Lawrence County, South Dakota. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 23, 2002, 9:07 PM MDT (03:07 UTC)
Expired: Jul 23, 2002, 9:45 PM MDT
In force: 38 min
Issued by: NWS Rapid City, SD
Area: Counties, with a storm outline in the text

County Lawrence County, SD

What was reported inside it

Time	Report	Where	Remark
Jul 23, 9:25 PM MDT	Hail 0.75	Spearfish, SD

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 3:05 PM MDT, 6 hours 2 minutes earlier.

Area forecast discussion, Jul 23, 3:05 PM MDT, 6 hours 2 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
305 PM MDT TUE JUL 23 2002

ZONAL FLOW WILL CONTINUE ACROSS THE N CONUS THRU MUCH OF THE WEEK
WITH UPPER HIGH SPINNING OVER THE SOUTHERN ROCKIES. THIS WILL RESULT
IN VERY WARM TEMPS AND WIDELY SCT STORMS CONTINUING AS SHRTWVS
ROTATE AROUND THE HIGH FROM TIME TO TIME. TIMING OF THESE WAVES IS
THE MAIN FORECAST CHALLENGE OVER THE NEXT FEW DAYS.

RIGHT NOW...LOW PRES OVER NE WY WITH WARM FRONT PUSHING NORTHWARD
ACROSS N SD. SHOWERS AND STORMS ARE MOVING OUT OF EASTERN CWA. MORE
STORMS DEVELOPING ACROSS W AND C WY AHEAD OF NEXT SHRTWV. THIS WAVE
WILL PUSH AREA LATER TONIGHT WITH BEST CHANCES FOR STORMS ACROSS NE
WY AND NW SD LATER THIS EVE AND OVERNIGHT. MOISTURE IS MARGINAL
ACROSS THE AREA...BUT DECENT SHEAR AND CAPE OF AROUND 1000 J/KG
COULD SUPPORT A FEW STRONG STORMS TONIGHT. SOME SHOWERS EXPECTED TO
LINGER ACROSS N AND E ZONES WED MORN.

SURF LOW WILL SLOWLY SLIDE EASTWARD OVERNIGHT AND TOMORROW WITH WEAK
FRONT DROPPING SOUTH OVER THE AREA TOMORROW. A TIGHTENING PRES
GRADIENT AND STEEPENING LAPSE RATES DURING THE DAY WILL ALLOW GUSTY
NW WINDS TO DEVELOP DURING THE LATE MORN AND AFT HOURS...ESP OVER NW
SD.

SLIGHT CHANCES FOR STORMS ARE EXPECTED LATER TOMORROW AND AGAIN THU
NIGHT AND FRI AS WEAK WAVES CONTINUE TO MOVE ACROSS. HIGH TEMPS IN
THE 90S ARE EXPECTED. LOOKS LIKE BETTER CHANCES FOR STORMS THIS
WEEKEND AS UPPER HIGH MOVES EAST AND SOMEWHAT COOLER AIR TRIES TO
SETTLE SOUTH.

.UNR...NONE.

ST

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 23, 10:35 PM MDT	Severe Thunderstorm Warning	UNR	Meade	55 min
Jul 23, 8:51 PM MDT	Severe Thunderstorm Warning	UNR	Crook	24 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data.