PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 1208 PM MST THU FEB 15 2007 ...A CHILLY NIGHT ACROSS NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... EARLY THURSDAY MORNING FEBRUARY 15...STRONG ARCTIC HIGH PRESSURE KEPT SKIES CLEAR...WITH LITTLE WIND. TEMPERATURES PLUMMETED. HERE IS A SAMPLE OF KNOWN OVERNIGHT LOWS IN DEGREES FAHRENHEIT. BUFFALO SD ASOS -21 CUSTER SD ASOS -20 FAITH SD ASOS -17 PINE RIDGE SD ASOS -32 PHILIP SD ASOS -28 RAPID CITY SD REGIONAL AIRPORT ASOS -21 ...RECORD LOW... RAPID CITY SD NWS EAST RAPID CITY -15 WINNER SD ASOS -11 GILLETTE WY ASOS -12 8NW USTA SD COOP -40 COTTONWOOD SD: -33 HOOVER SD -38 MISSION SD -21 OELRICHS SD -25 OGLALA SD -25 ORAL SD -25 PORCUPINE 11N SD -32 NW RAPID CITY SD -19 SHADEHILL SD -30