Alert archive / Wisconsin / Special Weather Statements in 2012
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at May 20, 2012, 12:38 PM CDT for Eau Claire County, Wisconsin. It was in force for 52 min. 2 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
- May 20, 2012, 12:38 PM CDT (17:38 UTC)
- Expired
- May 20, 2012, 1:30 PM CDT
- In force
- 52 min
- Issued by
- NWS Twin Cities, MN
County Eau Claire County, WI
The radar
The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 17:39 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 |
|---|---|---|---|
| May 20, 12:50 PM CDT | HAIL 1 | 4 Nne Cornell, WI | |
| May 20, 12:50 PM CDT | HAIL 1 | Nne Cornell, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 5.6 hours before the alert went out and 204 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
272
WWUS83 KMPX 201738
SPSMPX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1238 PM CDT SUN MAY 20 2012
WIZ016-027-028-201830-
CHIPPEWA-EAU CLAIRE-RUSK-
1238 PM CDT SUN MAY 20 2012
AT 1233 PM CDT...WEATHER SERVICE RADAR WAS TRACKING NUMEROUS STRONG
THUNDERSTORMS ACROSS EASTERN CHIPPEWA AND EASTERN EAU CLAIRE
COUNTIES. THESE STORMS WERE MOVING NORTHEAST AT 50 MPH.
HAIL UP TO DIME SIZE AND WINDS UP TO 30 MPH ARE EXPECTED WITH THESE
STORMS.
* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
FOSTER.
FAIRCHILD.
AUGUSTA.
LUDINGTON.
BATEMAN.
BOYD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
&&
LAT...LON 4459 9092 4459 9136 4529 9120 4529 9092
4462 9091 4460 9091
TIME...MOT...LOC 1736Z 207DEG 41KT 4462 9121
$$
JLTThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 7:05 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 55 min |
| May 19, 7:05 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin, Rice, Scott | 40 min |
| May 19, 7:31 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington | 59 min |
| May 19, 7:51 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin, Scott | 38 min |
| May 19, 8:06 PM CDT | Areal Flood Advisory | MPX | Dakota, Hennepin, Ramsey, Scott | 3 hr |
| May 19, 8:52 PM CDT | Special Weather Statement | MPX | Brown, Nicollet, Sibley, Watonwan | 38 min |
| May 20, 1:10 AM CDT | Special Weather Statement | MPX | Benton, Mille Lacs | 50 min |
| May 20, 1:43 AM CDT | Special Weather Statement | MPX | Anoka, Chisago, Isanti, Ramsey, Washington | 47 min |
| May 19, 7:42 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 63 min |
Nearby
Special Weather Statements in Wisconsin, 2012Every special weather statement 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.