Alert archive / Iowa / Special Weather Statements in 2016
Special Weather Statement, NWS Des Moines, IA
NWS Des Moines, IA issued this special weather statement at Aug 19, 2016, 8:06 PM CDT for Butler County, Grundy County, Hardin County, Iowa. It was in force for 54 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
- Aug 19, 2016, 8:06 PM CDT (01:06 UTC)
- Expired
- Aug 19, 2016, 9:00 PM CDT
- In force
- 54 min
- Issued by
- NWS Des Moines, IA
Counties Butler County, IA, Grundy County, IA, Hardin County, IA
The radar
The Des Moines radar (KDMX), 101 km from the middle of the area, began a volume at 01:08 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.1 hours before the alert went out and 268 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
- 242 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this special weather statement went out at Aug 19, 6:35 PM CDT, 1 hour 31 minutes earlier.
Area forecast discussion, Aug 19, 6:35 PM CDT, 1 hour 31 minutes before
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</html>Hazardous weather outlook, Aug 19, 3:30 PM CDT, 4 hours 36 minutes before
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Local storm report, Aug 19, 3:45 PM CDT, 4 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
345 PM CDT FRI AUG 19 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM TSTM WND GST 4 NNW KANAWHA 42.99N 93.81W
08/19/2016 E60 MPH HANCOCK IA TRAINED SPOTTER
50-60 MPH WINDS. SMALL HAIL STONES ABOUT THE
SIZE OF DIMES. LASTED ROUGHLY 3-4 MINUTES.
&&
NWS DES MOINES IA
IRIS SYSTEMSpecial weather statement, Aug 19, 6:10 PM CDT, 1 hour 56 minutes before
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SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 659 PM CDT FRI AUG 19 2016 IAZ048-049-060-061-200045- JASPER IA-STORY IA-POLK IA-MARSHALL IA- 659 PM CDT FRI AUG 19 2016 ...STRONG WINDS WITH OUTFLOW BOUNDARY SURGING SOUTHEAST BETWEEN AMES AND DES MOINES... AT 657 PM CDT...TRAINED WEATHER SPOTTERS REPORTED STRONG WINDS WITH A THUNDERSTORM OUTFLOW BOUNDARY NEAR HUXLEY...OR NEAR NEVADA...MOVING EAST AT 35 MPH. WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE AS THIS BOUNDARY PASSES THROUGH. AMES AIRPORT RECENTLY GUSTED TO 48 MPH. LOCATIONS IMPACTED INCLUDE... AMES...ANKENY...NEVADA...HUXLEY...COLFAX...SLATER...BAXTER...IOWA STATE CENTER...MAXWELL...MELBOURNE...CAMBRIDGE...ELKHART...COLLINS... ALLEMAN...SHELDAHL...KELLEY...RHODES...MINGO...VALERIA AND AMES MUNICIPAL AIRPORT. LAT...LON 4165 9316 4181 9372 4206 9364 4194 9301 TIME...MOT...LOC 2357Z 291DEG 29KT 4195 9354 SKOW
Special weather statement, Aug 19, 7:30 PM CDT, 36 minutes before
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</html>Special weather statement, Aug 19, 8:06 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 7:30 PM CDT | Special Weather Statement | DMX | Jasper, Marshall | 60 min |
| Aug 19, 8:12 PM CDT | Special Weather Statement | DMX | Jasper, Mahaska, Poweshiek, Tama | 63 min |
Nearby
Special Weather Statements in Iowa, 2016Every special weather statement in 2016
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.