Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 70, NWS Sioux Falls, SD

May 5, 2012Jackson County, Nobles County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 5, 2012, 11:49 AM CDT for Jackson County, Nobles County, Minnesota. It was in force for 41 min. 1 report 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
May 5, 2012, 11:49 AM CDT (16:49 UTC)
Expired
May 5, 2012, 12:30 PM CDT
In force
41 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
58.0 mph

Counties Jackson County, MN, Nobles County, MN

The radar

The Sioux Falls radar (KFSD), 93 km from the middle of the area, began a volume at 16:52 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

TimeReportWhereRemark
May 5, 11:58 AM CDTHAIL 1.25Rushmore, MNLOTS OF PEA TO MARBLE SIZE HAIL, BUT THERE ARE A FEW PIECES UP TO A QUARTER AND HALF DOLLAR SIZE

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 5, 6:49 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 4.8 hours before the alert went out and 206 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2012-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2012-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
480 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

883 
WUUS53 KFSD 051649
SVRFSD
MNC063-105-051730-
/O.NEW.KFSD.SV.W.0070.120505T1649Z-120505T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1149 AM CDT SAT MAY 5 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN JACKSON COUNTY IN SOUTHWEST MINNESOTA...
  SOUTHERN NOBLES COUNTY IN SOUTHWEST MINNESOTA...

* UNTIL 1230 PM CDT

* AT 1148 AM CDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE
  THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS LOCATED
  NEAR ADRIAN...OR 14 MILES EAST OF LUVERNE...AND MOVING EAST AT 40
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RUSHMORE AROUND 1155 AM CDT...
  WORTHINGTON AROUND 1210 PM CDT...
  BREWSTER AND ROUND LAKE AROUND 1220 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4375 9529 4350 9528 4351 9601 4375 9601
TIME...MOT...LOC 1648Z 271DEG 35KT 4363 9587
WIND...HAIL <58MPH 1.00IN

$$

HANKO
2 follow-up statements
867 
WWUS53 KFSD 051701
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1201 PM CDT SAT MAY 5 2012

MNC063-105-051730-
/O.CON.KFSD.SV.W.0070.000000T0000Z-120505T1730Z/
JACKSON MN-NOBLES MN-
1201 PM CDT SAT MAY 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
NOBLES AND SOUTHWESTERN JACKSON COUNTIES UNTIL 1230 PM CDT...

AT 1201 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE
HAIL.  THIS STORM WAS LOCATED NEAR RUSHMORE...OR 8 MILES WEST OF
WORTHINGTON...MOVING EAST AT 40 MPH.

IN ADDITION...AT 1159 AM CDT HALF DOLLAR SIZED HAIL WAS REPORTED IN 
RUSHMORE WITH THIS STORM.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  WORTHINGTON AROUND 1210 PM CDT...
  BREWSTER AND ROUND LAKE AROUND 1220 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4375 9581 4375 9529 4350 9528 4351 9584
TIME...MOT...LOC 1701Z 271DEG 35KT 4363 9570
WIND...HAIL <58MPH 1.25IN

$$

HANKO
558 
WWUS53 KFSD 051723
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1223 PM CDT SAT MAY 5 2012

MNC063-105-051732-
/O.EXP.KFSD.SV.W.0070.000000T0000Z-120505T1730Z/
JACKSON MN-NOBLES MN-
1223 PM CDT SAT MAY 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NOBLES AND
SOUTHWESTERN JACKSON COUNTIES WILL EXPIRE AT 1230 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4375 9581 4375 9529 4350 9528 4351 9584
TIME...MOT...LOC 1722Z 271DEG 35KT 4363 9542

$$

HANKO

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 10:25 AM CDTSevere Thunderstorm WarningFSDPipestone35 min
May 5, 10:42 AM CDTSevere Thunderstorm WarningFSDRock48 min
May 5, 11:23 AM CDTSevere Thunderstorm WarningFSDNobles, Rock37 min
May 5, 12:14 PM CDTFlash Flood WarningFSDCottonwood, Jackson3 hr
May 5, 12:40 PM CDTSevere Thunderstorm WarningFSDLincoln23 min
May 5, 3:06 PM CDTFlash Flood WatchFSDCottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more13 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012

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.