BROOMFIELD — When Megan Chavez heats up, teams get burned. And Thursday night, the Holy Family guard all but fried Longmont with her offensive play.

The senior led the second-ranked Class 3A Tigers to a 52-13 rout of the 2011 4A finalist with nearly her best offensive showing of the season. Chavez hit five 3-point field goals over the course of the game to finish the night with a game-high 23 points, her second-highest output this season.

Impressive as her entire night was, Chavez’s game out of halftime was what dropped the Holy Family faithful’s jaws. She bagged the game in her team’s most dominant period, scoring 15 points in the third.

“We got pumped up in the locker room at halftime, we wanted to show we were better than the 24 points we opened with,” Chavez said. “McKenzie (Zeman) came up with some great steals out of half, and we started to get into a rhythm in the period.”

Chavez stole the offensive show out of halftime, in part because she was the only player to score in the 8-minute stretch. The rest of Holy Family (15-1, 6-1 Metro League) and all of Longmont (3-14, 2-7 Northern League) were silent shooting until the fourth.

The period was devastating to the Trojans, who had some success to finish the first half.

The team’s offense never found its groove, especially early. Kathryn Schell hit 3s in the first and second periods to lead her team’s scoring with six points. But Longmont found some success on the defensive end of the court.

The Trojans held Holy Family to six points in the second period, with the team clogging the lane and forcing the issue at the post. The Tigers still penetrated, but missed six consecutive baskets once they were thrown out of rhythm.

Some of the problem, from Ron Rossi’s point of view, was forcing the play too much on offense.

“Sometimes we were playing too fast,” the Holy Family coach said. “And we were going for the fancy play, instead of the basic one.”

The win plants an impressive milestone for Holy Family, giving the team a clean sweep of its upper-classification competition. The team faced four 4A teams this season — including five-time defending state champion Broomfield.

“It’s a big statement for us,” Chavez said. “I love that coach schedules these games. It’s nice to go up a division and prove ourselves. But really, the big thing is it builds a lot of momentum heading into our final games.”

Longmont got the better of the Tigers in the team’s first meeting last season, beating Holy Family 76-61.

Longmont and its coach Jay Darien were unavailable for comment.

Holy Family 52, Longmont 13

At Holy Family HS

LONGMONT (3-14, 2-7)

Fallon 1 1-6 3, La. Haddock 1 0-0 2, Tulenko 1 0-0 2, K. Schell 2 0-2 6, A. Schell 0 0-1 0. Total 5 1-8 13.

HOLY FAMILY (15-1, 6-1)

Turney 1 0-0 2, L. Chavez 1 2-2 4, M. Chavez 8 2-2 23, Giltner 5 1-1 11, Gills 1 0-0 2, Johannsen 5 0-2 10. Total 21 5-7 52.

Score by quarters:

Longmont 7 3 0 3 — 13

Holy Family 18 6 15 13 — 52

3-point field goals — Longmont (2): K. Schell 2; Holy Family (5): Chavez 5. Total fouls — Longmont 7; Holy Family 14. Fouled out — none. Technical foul — Longmont coach Jay Darien.